diff --git a/libraries/core/src/main/kotlin/com/bumble/appyx/core/children/ChildEntry.kt b/libraries/core/src/main/kotlin/com/bumble/appyx/core/children/ChildEntry.kt
index cd36ef971c..a900406e71 100644
--- a/libraries/core/src/main/kotlin/com/bumble/appyx/core/children/ChildEntry.kt
+++ b/libraries/core/src/main/kotlin/com/bumble/appyx/core/children/ChildEntry.kt
@@ -1,11 +1,12 @@
 package com.bumble.appyx.core.children
 
+import android.os.Parcelable
 import com.bumble.appyx.core.navigation.NavKey
 import com.bumble.appyx.core.node.Node
 import com.bumble.appyx.core.state.SavedStateMap
 
 // custom equals/hashCode for MutableStateFlow and equality checks
-sealed class ChildEntry<T> {
+sealed class ChildEntry<T : Parcelable> {
     abstract val key: NavKey<T>
 
     override fun equals(other: Any?): Boolean =
@@ -18,12 +19,12 @@ sealed class ChildEntry<T> {
         "$key@${javaClass.simpleName}"
 
     /** All public APIs should return this type of child which is ready to work with. */
-    class Initialized<T>(
+    class Initialized<T : Parcelable>(
         override val key: NavKey<T>,
         val node: Node,
     ) : ChildEntry<T>()
 
-    class Suspended<T>(
+    class Suspended<T : Parcelable>(
         override val key: NavKey<T>,
         val savedState: SavedStateMap?,
     ) : ChildEntry<T>()
diff --git a/libraries/core/src/main/kotlin/com/bumble/appyx/core/children/ChildEntryExt.kt b/libraries/core/src/main/kotlin/com/bumble/appyx/core/children/ChildEntryExt.kt
index d5ee48a42e..bef7beee0d 100644
--- a/libraries/core/src/main/kotlin/com/bumble/appyx/core/children/ChildEntryExt.kt
+++ b/libraries/core/src/main/kotlin/com/bumble/appyx/core/children/ChildEntryExt.kt
@@ -1,8 +1,9 @@
 package com.bumble.appyx.core.children
 
+import android.os.Parcelable
 import com.bumble.appyx.core.node.Node
 
-val <T> ChildEntry<T>.nodeOrNull: Node?
+val <T : Parcelable> ChildEntry<T>.nodeOrNull: Node?
     get() =
         when (this) {
             is ChildEntry.Initialized -> node
diff --git a/libraries/core/src/main/kotlin/com/bumble/appyx/core/children/ChildNodeCreationManager.kt b/libraries/core/src/main/kotlin/com/bumble/appyx/core/children/ChildNodeCreationManager.kt
index 1b020aa960..59b312db5a 100644
--- a/libraries/core/src/main/kotlin/com/bumble/appyx/core/children/ChildNodeCreationManager.kt
+++ b/libraries/core/src/main/kotlin/com/bumble/appyx/core/children/ChildNodeCreationManager.kt
@@ -1,5 +1,6 @@
 package com.bumble.appyx.core.children
 
+import android.os.Parcelable
 import androidx.lifecycle.coroutineScope
 import com.bumble.appyx.core.modality.AncestryInfo
 import com.bumble.appyx.core.modality.BuildContext
@@ -21,7 +22,7 @@ import kotlinx.coroutines.launch
  *
  * Lifecycle of these nodes is managed in [com.bumble.appyx.core.lifecycle.ChildNodeLifecycleManager].
  */
-internal class ChildNodeCreationManager<NavTarget : Any>(
+internal class ChildNodeCreationManager<NavTarget : Parcelable>(
     private var savedStateMap: SavedStateMap?,
     private val customisations: NodeCustomisationDirectory,
     private val keepMode: ChildEntry.KeepMode,
diff --git a/libraries/core/src/main/kotlin/com/bumble/appyx/core/composable/Child.kt b/libraries/core/src/main/kotlin/com/bumble/appyx/core/composable/Child.kt
index 39f9ff9ca3..c8fe862de9 100644
--- a/libraries/core/src/main/kotlin/com/bumble/appyx/core/composable/Child.kt
+++ b/libraries/core/src/main/kotlin/com/bumble/appyx/core/composable/Child.kt
@@ -1,5 +1,6 @@
 package com.bumble.appyx.core.composable
 
+import android.os.Parcelable
 import androidx.compose.animation.core.Transition
 import androidx.compose.foundation.layout.Box
 import androidx.compose.runtime.Composable
@@ -32,7 +33,7 @@ import com.bumble.appyx.core.navigation.transition.TransitionParams
 import kotlinx.coroutines.flow.map
 
 @Composable
-fun <NavTarget : Any, State> ParentNode<NavTarget>.Child(
+fun <NavTarget : Parcelable, State : Parcelable> ParentNode<NavTarget>.Child(
     navElement: NavElement<NavTarget, out State>,
     saveableStateHolder: SaveableStateHolder,
     transitionParams: TransitionParams,
@@ -87,7 +88,7 @@ private class ChildRendererImpl(
 }
 
 @Composable
-fun <NavTarget : Any, State> ParentNode<NavTarget>.Child(
+fun <NavTarget : Parcelable, State : Parcelable> ParentNode<NavTarget>.Child(
     navElement: NavElement<NavTarget, out State>,
     modifier: Modifier = Modifier,
     transitionHandler: TransitionHandler<NavTarget, State> = JumpToEndTransitionHandler(),
@@ -125,7 +126,7 @@ fun <NavTarget : Any, State> ParentNode<NavTarget>.Child(
     }
 }
 
-private fun <NavTarget : Any, State> NavElement<NavTarget, State>.createDescriptor(
+private fun <NavTarget : Parcelable, State : Parcelable> NavElement<NavTarget, State>.createDescriptor(
     transitionParams: TransitionParams
 ) =
     TransitionDescriptor(
@@ -137,7 +138,7 @@ private fun <NavTarget : Any, State> NavElement<NavTarget, State>.createDescript
     )
 
 @Composable
-fun <R, S> NavModel<R, S>?.childrenAsState(): State<NavElements<R, out S>> =
+fun <R : Parcelable, S : Parcelable> NavModel<R, S>?.childrenAsState(): State<NavElements<R, out S>> =
     if (this != null) {
         elements.collectAsState()
     } else {
@@ -145,7 +146,7 @@ fun <R, S> NavModel<R, S>?.childrenAsState(): State<NavElements<R, out S>> =
     }
 
 @Composable
-fun <R, S> NavModel<R, S>?.visibleChildrenAsState(): State<NavElements<R, out S>> =
+fun <R : Parcelable, S : Parcelable> NavModel<R, S>?.visibleChildrenAsState(): State<NavElements<R, out S>> =
     if (this != null) {
         val visibleElementsFlow = remember { screenState.map { it.onScreen } }
         visibleElementsFlow.collectAsState(emptyList())
diff --git a/libraries/core/src/main/kotlin/com/bumble/appyx/core/composable/Children.kt b/libraries/core/src/main/kotlin/com/bumble/appyx/core/composable/Children.kt
index 55937df26d..b7e22e5c41 100644
--- a/libraries/core/src/main/kotlin/com/bumble/appyx/core/composable/Children.kt
+++ b/libraries/core/src/main/kotlin/com/bumble/appyx/core/composable/Children.kt
@@ -1,5 +1,6 @@
 package com.bumble.appyx.core.composable
 
+import android.os.Parcelable
 import androidx.compose.foundation.layout.Box
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.collectAsState
@@ -26,7 +27,7 @@ import kotlinx.coroutines.flow.map
 import kotlin.reflect.KClass
 
 @Composable
-inline fun <reified NavTarget : Any, State> ParentNode<NavTarget>.Children(
+inline fun <reified NavTarget : Parcelable, State : Parcelable> ParentNode<NavTarget>.Children(
     navModel: NavModel<NavTarget, State>,
     modifier: Modifier = Modifier,
     transitionHandler: TransitionHandler<NavTarget, State> = JumpToEndTransitionHandler(),
@@ -63,7 +64,7 @@ inline fun <reified NavTarget : Any, State> ParentNode<NavTarget>.Children(
     }
 }
 
-class ChildrenTransitionScope<T : Any, S>(
+class ChildrenTransitionScope<T : Parcelable, S : Parcelable>(
     private val transitionHandler: TransitionHandler<T, S>,
     private val transitionParams: TransitionParams,
     private val navModel: NavModel<T, S>
diff --git a/libraries/core/src/main/kotlin/com/bumble/appyx/core/lifecycle/ChildNodeLifecycleManager.kt b/libraries/core/src/main/kotlin/com/bumble/appyx/core/lifecycle/ChildNodeLifecycleManager.kt
index 59d6996faa..637ed6e81f 100644
--- a/libraries/core/src/main/kotlin/com/bumble/appyx/core/lifecycle/ChildNodeLifecycleManager.kt
+++ b/libraries/core/src/main/kotlin/com/bumble/appyx/core/lifecycle/ChildNodeLifecycleManager.kt
@@ -1,5 +1,6 @@
 package com.bumble.appyx.core.lifecycle
 
+import android.os.Parcelable
 import androidx.lifecycle.Lifecycle
 import androidx.lifecycle.LifecycleRegistry
 import com.bumble.appyx.core.children.ChildEntry
@@ -23,7 +24,7 @@ import kotlinx.coroutines.launch
  * Hosts [LifecycleRegistry] to manage the current node lifecycle
  * and updates lifecycle of children nodes when updated.
  */
-internal class ChildNodeLifecycleManager<NavTarget>(
+internal class ChildNodeLifecycleManager<NavTarget : Parcelable>(
     private val navModel: NavModel<NavTarget, *>,
     private val children: StateFlow<ChildEntryMap<NavTarget>>,
     private val coroutineScope: CoroutineScope,
@@ -86,7 +87,7 @@ internal class ChildNodeLifecycleManager<NavTarget>(
         }
     }
 
-    private fun <NavTarget> Flow<NavModelAdapter.ScreenState<NavTarget, *>>.keys() =
+    private fun <NavTarget : Parcelable> Flow<NavModelAdapter.ScreenState<NavTarget, *>>.keys() =
         this
             .map { screenState ->
                 ScreenState(
@@ -100,7 +101,7 @@ internal class ChildNodeLifecycleManager<NavTarget>(
         nodeOrNull?.updateLifecycleState(state)
     }
 
-    private data class ScreenState<NavTarget>(
+    private data class ScreenState<NavTarget : Parcelable>(
         val onScreen: List<NavKey<NavTarget>> = emptyList(),
         val offScreen: List<NavKey<NavTarget>> = emptyList(),
     )
diff --git a/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/BaseNavModel.kt b/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/BaseNavModel.kt
index 82546b4553..df5a00faf9 100644
--- a/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/BaseNavModel.kt
+++ b/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/BaseNavModel.kt
@@ -1,5 +1,6 @@
 package com.bumble.appyx.core.navigation
 
+import android.os.Parcelable
 import androidx.activity.OnBackPressedCallback
 import com.bumble.appyx.core.mapState
 import com.bumble.appyx.core.navigation.backpresshandlerstrategies.BackPressHandlerStrategy
@@ -28,7 +29,7 @@ import kotlin.coroutines.EmptyCoroutineContext
  *
  * If more granular configuration is required, you should inherit NavModel interface instead.
  */
-abstract class BaseNavModel<NavTarget, State>(
+abstract class BaseNavModel<NavTarget : Parcelable, State : Parcelable>(
     private val backPressHandler: BackPressHandlerStrategy<NavTarget, State> = DontHandleBackPress(),
     private val operationStrategy: OperationStrategy<NavTarget, State> = ExecuteImmediately(),
     private val screenResolver: OnScreenStateResolver<State>,
diff --git a/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/EmptyNavModel.kt b/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/EmptyNavModel.kt
index 330d8c5172..fa4a8eed2e 100644
--- a/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/EmptyNavModel.kt
+++ b/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/EmptyNavModel.kt
@@ -1,5 +1,6 @@
 package com.bumble.appyx.core.navigation
 
+import android.os.Parcelable
 import com.bumble.appyx.core.navigation.onscreen.OnScreenStateResolver
 
 /**
@@ -7,11 +8,11 @@ import com.bumble.appyx.core.navigation.onscreen.OnScreenStateResolver
  * This is potentially useful if your ParentNode only uses
  * [com.bumble.appyx.core.navigation.model.permanent.PermanentNavModel]
  */
-class EmptyNavModel<NavTarget, State> : BaseNavModel<NavTarget, State>(
+class EmptyNavModel<NavTarget : Parcelable> : BaseNavModel<NavTarget, EmptyState>(
     savedStateMap = null,
     finalState = null,
     screenResolver = OnScreenStateResolver { true }
 ) {
-    override val initialElements: NavElements<NavTarget, State>
+    override val initialElements: NavElements<NavTarget, EmptyState>
         get() = emptyList()
 }
diff --git a/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/EmptyState.kt b/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/EmptyState.kt
new file mode 100644
index 0000000000..e6d8fe80e1
--- /dev/null
+++ b/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/EmptyState.kt
@@ -0,0 +1,12 @@
+package com.bumble.appyx.core.navigation
+
+import android.os.Parcelable
+import kotlinx.parcelize.Parcelize
+
+@Suppress("PARCELABLE_PRIMARY_CONSTRUCTOR_IS_EMPTY")
+@Parcelize
+class EmptyState internal constructor() : Parcelable {
+    companion object {
+        val INSTANCE = EmptyState()
+    }
+}
diff --git a/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/NavElement.kt b/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/NavElement.kt
index 2a06ceb480..a9977e9f3b 100644
--- a/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/NavElement.kt
+++ b/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/NavElement.kt
@@ -7,18 +7,18 @@ import kotlinx.parcelize.RawValue
 
 @Parcelize
 @Immutable
-class NavElement<NavTarget, State> private constructor(
-    val key: @RawValue NavKey<NavTarget>,
-    val fromState: @RawValue State,
-    val targetState: @RawValue State,
-    val operation: @RawValue Operation<NavTarget, State>,
+class NavElement<NavTarget : Parcelable, State : Parcelable> private constructor(
+    val key: NavKey<NavTarget>,
+    val fromState: State,
+    val targetState: State,
+    val operation: Operation<NavTarget, State>,
     val transitionHistory: List<Pair<State, State>>
 ) : Parcelable {
     constructor(
-        key: @RawValue NavKey<NavTarget>,
-        fromState: @RawValue State,
-        targetState: @RawValue State,
-        operation: @RawValue Operation<NavTarget, State>,
+        key: NavKey<NavTarget>,
+        fromState: State,
+        targetState: State,
+        operation: Operation<NavTarget, State>,
     ) : this(
         key,
         fromState,
diff --git a/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/NavKey.kt b/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/NavKey.kt
index 138a6c5ffe..9e2869df77 100644
--- a/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/NavKey.kt
+++ b/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/NavKey.kt
@@ -8,12 +8,12 @@ import java.util.UUID
 
 @Parcelize
 @Immutable
-class NavKey<NavTarget> private constructor(
-    val navTarget: @RawValue NavTarget,
+class NavKey<NavTarget : Parcelable> private constructor(
+    val navTarget: NavTarget,
     val id: String
 ) : Parcelable {
 
-    constructor(navTarget: @RawValue NavTarget) : this(
+    constructor(navTarget: NavTarget) : this(
         navTarget = navTarget,
         id = UUID.randomUUID().toString()
     )
diff --git a/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/NavModel.kt b/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/NavModel.kt
index 1e9453f5e1..ed541f1797 100644
--- a/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/NavModel.kt
+++ b/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/NavModel.kt
@@ -1,5 +1,6 @@
 package com.bumble.appyx.core.navigation
 
+import android.os.Parcelable
 import androidx.compose.runtime.Stable
 import com.bumble.appyx.core.plugin.BackPressHandler
 import com.bumble.appyx.core.plugin.SavesInstanceState
@@ -7,7 +8,7 @@ import com.bumble.appyx.core.plugin.UpNavigationHandler
 import kotlinx.coroutines.flow.StateFlow
 
 @Stable
-interface NavModel<NavTarget, State> : NavModelAdapter<NavTarget, State>,
+interface NavModel<NavTarget : Parcelable, State : Parcelable> : NavModelAdapter<NavTarget, State>,
     UpNavigationHandler,
     SavesInstanceState,
     BackPressHandler {
diff --git a/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/NavModelAdapter.kt b/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/NavModelAdapter.kt
index ca524a2cbb..b07a59849a 100644
--- a/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/NavModelAdapter.kt
+++ b/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/NavModelAdapter.kt
@@ -1,14 +1,15 @@
 package com.bumble.appyx.core.navigation
 
+import android.os.Parcelable
 import androidx.compose.runtime.Stable
 import kotlinx.coroutines.flow.StateFlow
 
 @Stable
-interface NavModelAdapter<NavTarget, State> {
+interface NavModelAdapter<NavTarget : Parcelable, State : Parcelable> {
 
     val screenState: StateFlow<ScreenState<NavTarget, out State>>
 
-    data class ScreenState<NavTarget, State>(
+    data class ScreenState<NavTarget : Parcelable, State : Parcelable>(
         val onScreen: NavElements<NavTarget, out State> = emptyList(),
         val offScreen: NavElements<NavTarget, out State> = emptyList(),
     )
diff --git a/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/Operation.kt b/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/Operation.kt
index 53f42e32e2..496e87ac86 100644
--- a/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/Operation.kt
+++ b/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/Operation.kt
@@ -3,7 +3,7 @@ package com.bumble.appyx.core.navigation
 import android.os.Parcelable
 import kotlinx.parcelize.Parcelize
 
-interface Operation<NavTarget, State> :
+interface Operation<NavTarget : Parcelable, State : Parcelable> :
         (NavElements<NavTarget, State>) -> NavElements<NavTarget, State>, Parcelable {
 
     fun isApplicable(elements: NavElements<NavTarget, State>): Boolean
@@ -67,7 +67,7 @@ interface Operation<NavTarget, State> :
     }
 
     @Parcelize
-    class Noop<NavTarget, State> : Operation<NavTarget, State> {
+    class Noop<NavTarget : Parcelable, State : Parcelable> : Operation<NavTarget, State> {
 
         override fun isApplicable(elements: NavElements<NavTarget, State>) = false
 
diff --git a/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/backpresshandlerstrategies/BackPressHandlerStrategy.kt b/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/backpresshandlerstrategies/BackPressHandlerStrategy.kt
index a0a1b6ef4e..ea383b14a3 100644
--- a/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/backpresshandlerstrategies/BackPressHandlerStrategy.kt
+++ b/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/backpresshandlerstrategies/BackPressHandlerStrategy.kt
@@ -1,10 +1,11 @@
 package com.bumble.appyx.core.navigation.backpresshandlerstrategies
 
+import android.os.Parcelable
 import com.bumble.appyx.core.navigation.BaseNavModel
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.flow.StateFlow
 
-interface BackPressHandlerStrategy<NavTarget, State> {
+interface BackPressHandlerStrategy<NavTarget : Parcelable, State : Parcelable> {
 
     fun init(navModel: BaseNavModel<NavTarget, State>, scope: CoroutineScope)
 
diff --git a/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/backpresshandlerstrategies/BaseBackPressHandlerStrategy.kt b/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/backpresshandlerstrategies/BaseBackPressHandlerStrategy.kt
index 42dfb6dcf8..21848c0c19 100644
--- a/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/backpresshandlerstrategies/BaseBackPressHandlerStrategy.kt
+++ b/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/backpresshandlerstrategies/BaseBackPressHandlerStrategy.kt
@@ -1,5 +1,6 @@
 package com.bumble.appyx.core.navigation.backpresshandlerstrategies
 
+import android.os.Parcelable
 import com.bumble.appyx.core.navigation.BaseNavModel
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.flow.Flow
@@ -7,7 +8,7 @@ import kotlinx.coroutines.flow.SharingStarted
 import kotlinx.coroutines.flow.StateFlow
 import kotlinx.coroutines.flow.stateIn
 
-abstract class BaseBackPressHandlerStrategy<NavTarget, State>
+abstract class BaseBackPressHandlerStrategy<NavTarget : Parcelable, State : Parcelable>
     : BackPressHandlerStrategy<NavTarget, State> {
 
     protected lateinit var scope: CoroutineScope
diff --git a/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/backpresshandlerstrategies/DontHandleBackPress.kt b/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/backpresshandlerstrategies/DontHandleBackPress.kt
index 6ad8f54630..ca55530933 100644
--- a/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/backpresshandlerstrategies/DontHandleBackPress.kt
+++ b/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/backpresshandlerstrategies/DontHandleBackPress.kt
@@ -1,9 +1,10 @@
 package com.bumble.appyx.core.navigation.backpresshandlerstrategies
 
+import android.os.Parcelable
 import kotlinx.coroutines.flow.Flow
 import kotlinx.coroutines.flow.flowOf
 
-class DontHandleBackPress<NavTarget, State> :
+class DontHandleBackPress<NavTarget : Parcelable, State : Parcelable> :
     BaseBackPressHandlerStrategy<NavTarget, State>() {
 
     override val canHandleBackPressFlow: Flow<Boolean> =
diff --git a/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/model/combined/CombinedNavModel.kt b/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/model/combined/CombinedNavModel.kt
index f7e31836ca..572b7a8c88 100644
--- a/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/model/combined/CombinedNavModel.kt
+++ b/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/model/combined/CombinedNavModel.kt
@@ -1,5 +1,6 @@
 package com.bumble.appyx.core.navigation.model.combined
 
+import android.os.Parcelable
 import androidx.activity.OnBackPressedCallback
 import com.bumble.appyx.core.combineState
 import com.bumble.appyx.core.navigation.NavElements
@@ -14,9 +15,9 @@ import kotlinx.coroutines.cancel
 import kotlinx.coroutines.flow.StateFlow
 import kotlin.coroutines.EmptyCoroutineContext
 
-class CombinedNavModel<NavTarget>(
+class CombinedNavModel<NavTarget : Parcelable>(
     val navModels: List<NavModel<NavTarget, *>>,
-) : NavModel<NavTarget, Any?>, Destroyable {
+) : NavModel<NavTarget, Parcelable>, Destroyable {
 
     constructor(vararg navModels: NavModel<NavTarget, *>) : this(navModels.toList())
 
diff --git a/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/model/combined/NavModelExt.kt b/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/model/combined/NavModelExt.kt
index 692f4a05a8..25ede220ab 100644
--- a/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/model/combined/NavModelExt.kt
+++ b/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/model/combined/NavModelExt.kt
@@ -1,8 +1,9 @@
 package com.bumble.appyx.core.navigation.model.combined
 
+import android.os.Parcelable
 import com.bumble.appyx.core.navigation.NavModel
 
-operator fun <NavTarget> NavModel<NavTarget, *>.plus(
+operator fun <NavTarget : Parcelable> NavModel<NavTarget, *>.plus(
     other: NavModel<NavTarget, *>,
 ): CombinedNavModel<NavTarget> {
     val currentModels = if (this is CombinedNavModel<NavTarget>) navModels else listOf(this)
diff --git a/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/model/permanent/PermanentElement.kt b/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/model/permanent/PermanentElement.kt
index dda0fc620b..107f97d690 100644
--- a/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/model/permanent/PermanentElement.kt
+++ b/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/model/permanent/PermanentElement.kt
@@ -1,5 +1,6 @@
 package com.bumble.appyx.core.navigation.model.permanent
 
+import com.bumble.appyx.core.navigation.EmptyState
 import com.bumble.appyx.core.navigation.NavElement
 
-typealias PermanentElement<T> = NavElement<T, Int>
+typealias PermanentElement<T> = NavElement<T, EmptyState>
diff --git a/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/model/permanent/PermanentElements.kt b/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/model/permanent/PermanentElements.kt
index 71ece421fa..5337e03037 100644
--- a/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/model/permanent/PermanentElements.kt
+++ b/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/model/permanent/PermanentElements.kt
@@ -1,5 +1,6 @@
 package com.bumble.appyx.core.navigation.model.permanent
 
+import com.bumble.appyx.core.navigation.EmptyState
 import com.bumble.appyx.core.navigation.NavElements
 
-typealias PermanentElements<T> = NavElements<T, Int>
+typealias PermanentElements<T> = NavElements<T, EmptyState>
diff --git a/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/model/permanent/PermanentNavModel.kt b/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/model/permanent/PermanentNavModel.kt
index a5e6800246..13cadf9335 100644
--- a/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/model/permanent/PermanentNavModel.kt
+++ b/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/model/permanent/PermanentNavModel.kt
@@ -1,6 +1,8 @@
 package com.bumble.appyx.core.navigation.model.permanent
 
+import android.os.Parcelable
 import com.bumble.appyx.core.mapState
+import com.bumble.appyx.core.navigation.EmptyState
 import com.bumble.appyx.core.navigation.NavElement
 import com.bumble.appyx.core.navigation.NavKey
 import com.bumble.appyx.core.navigation.NavModel
@@ -15,11 +17,11 @@ import kotlinx.coroutines.flow.StateFlow
 import kotlinx.coroutines.flow.update
 import kotlin.coroutines.EmptyCoroutineContext
 
-class PermanentNavModel<NavTarget : Any>(
+class PermanentNavModel<NavTarget : Parcelable>(
     navTargets: Set<NavTarget> = emptySet(),
     savedStateMap: SavedStateMap?,
     private val key: String = requireNotNull(PermanentNavModel::class.qualifiedName),
-) : NavModel<NavTarget, Int> {
+) : NavModel<NavTarget, EmptyState> {
     private val scope: CoroutineScope =
         CoroutineScope(EmptyCoroutineContext + Dispatchers.Unconfined)
 
@@ -37,8 +39,8 @@ class PermanentNavModel<NavTarget : Any>(
         savedStateMap.restore() ?: navTargets.map { key ->
             PermanentElement(
                 key = NavKey(navTarget = key),
-                fromState = 0,
-                targetState = 0,
+                fromState = EmptyState.INSTANCE,
+                targetState = EmptyState.INSTANCE,
                 operation = Operation.Noop()
             )
         }
@@ -47,7 +49,7 @@ class PermanentNavModel<NavTarget : Any>(
     override val elements: StateFlow<PermanentElements<NavTarget>>
         get() = state
 
-    override val screenState: StateFlow<NavModelAdapter.ScreenState<NavTarget, Int>> by lazy {
+    override val screenState: StateFlow<NavModelAdapter.ScreenState<NavTarget, EmptyState>> by lazy {
         state.mapState(scope) { NavModelAdapter.ScreenState(onScreen = it) }
     }
 
@@ -55,7 +57,7 @@ class PermanentNavModel<NavTarget : Any>(
         // no-op
     }
 
-    override fun accept(operation: Operation<NavTarget, Int>) {
+    override fun accept(operation: Operation<NavTarget, EmptyState>) {
         if (operation.isApplicable(state.value)) {
             state.update { operation(it) }
         }
@@ -65,7 +67,7 @@ class PermanentNavModel<NavTarget : Any>(
         state[key] = this.state.value
     }
 
-    private fun SavedStateMap?.restore(): List<NavElement<NavTarget, Int>>? =
+    private fun SavedStateMap?.restore(): List<NavElement<NavTarget, EmptyState>>? =
         (this?.get(key) as? PermanentElements<NavTarget>)
 
 }
diff --git a/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/model/permanent/operation/Add.kt b/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/model/permanent/operation/Add.kt
index 9fd6642aa5..c7cc73fb5c 100644
--- a/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/model/permanent/operation/Add.kt
+++ b/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/model/permanent/operation/Add.kt
@@ -1,5 +1,7 @@
 package com.bumble.appyx.core.navigation.model.permanent.operation
 
+import android.os.Parcelable
+import com.bumble.appyx.core.navigation.EmptyState
 import com.bumble.appyx.core.navigation.NavElement
 import com.bumble.appyx.core.navigation.NavElements
 import com.bumble.appyx.core.navigation.NavKey
@@ -7,28 +9,28 @@ import com.bumble.appyx.core.navigation.model.permanent.PermanentNavModel
 import kotlinx.parcelize.Parcelize
 
 @Parcelize
-data class Add<T : Any>(
+data class Add<T : Parcelable>(
     private val key: NavKey<T>
 ) : PermanentOperation<T> {
 
-    override fun isApplicable(elements: NavElements<T, Int>): Boolean =
+    override fun isApplicable(elements: NavElements<T, EmptyState>): Boolean =
         !elements.any { it.key == key }
 
     override fun invoke(
-        elements: NavElements<T, Int>
-    ): NavElements<T, Int> =
+        elements: NavElements<T, EmptyState>
+    ): NavElements<T, EmptyState> =
         if (elements.any { it.key == key }) {
             elements
         } else {
             elements + NavElement(
                 key = key,
-                fromState = 0,
-                targetState = 0,
+                fromState = EmptyState.INSTANCE,
+                targetState = EmptyState.INSTANCE,
                 operation = this,
             )
         }
 }
 
-fun <T : Any> PermanentNavModel<T>.add(navKey: NavKey<T>) {
+fun <T : Parcelable> PermanentNavModel<T>.add(navKey: NavKey<T>) {
     accept(Add(navKey))
 }
diff --git a/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/model/permanent/operation/AddUnique.kt b/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/model/permanent/operation/AddUnique.kt
index 287bd47111..1430e80cdd 100644
--- a/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/model/permanent/operation/AddUnique.kt
+++ b/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/model/permanent/operation/AddUnique.kt
@@ -1,5 +1,7 @@
 package com.bumble.appyx.core.navigation.model.permanent.operation
 
+import android.os.Parcelable
+import com.bumble.appyx.core.navigation.EmptyState
 import com.bumble.appyx.core.navigation.NavElement
 import com.bumble.appyx.core.navigation.NavElements
 import com.bumble.appyx.core.navigation.NavKey
@@ -11,28 +13,28 @@ import kotlinx.parcelize.RawValue
  * Adds [NavTarget] into [PermanentNavModel] only if it is not there yet.
  */
 @Parcelize
-data class AddUnique<NavTarget : Any>(
-    private val navTarget: @RawValue NavTarget,
+data class AddUnique<NavTarget : Parcelable>(
+    private val navTarget: NavTarget,
 ) : PermanentOperation<NavTarget> {
 
-    override fun isApplicable(elements: NavElements<NavTarget, Int>): Boolean =
+    override fun isApplicable(elements: NavElements<NavTarget, EmptyState>): Boolean =
         !elements.any { it.key.navTarget == navTarget }
 
     override fun invoke(
-        elements: NavElements<NavTarget, Int>
-    ): NavElements<NavTarget, Int> =
+        elements: NavElements<NavTarget, EmptyState>
+    ): NavElements<NavTarget, EmptyState> =
         if (elements.any { it.key.navTarget == navTarget }) {
             elements
         } else {
             elements + NavElement(
                 key = NavKey(navTarget),
-                fromState = 0,
-                targetState = 0,
+                fromState = EmptyState.INSTANCE,
+                targetState = EmptyState.INSTANCE,
                 operation = this,
             )
         }
 }
 
-fun <NavTarget : Any> PermanentNavModel<NavTarget>.addUnique(navTarget: NavTarget) {
+fun <NavTarget : Parcelable> PermanentNavModel<NavTarget>.addUnique(navTarget: NavTarget) {
     accept(AddUnique(navTarget))
 }
diff --git a/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/model/permanent/operation/PermanentOperation.kt b/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/model/permanent/operation/PermanentOperation.kt
index 364b7c4818..a049979486 100644
--- a/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/model/permanent/operation/PermanentOperation.kt
+++ b/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/model/permanent/operation/PermanentOperation.kt
@@ -1,5 +1,7 @@
 package com.bumble.appyx.core.navigation.model.permanent.operation
 
+import android.os.Parcelable
+import com.bumble.appyx.core.navigation.EmptyState
 import com.bumble.appyx.core.navigation.Operation
 
-interface PermanentOperation<T> : Operation<T, Int>
+interface PermanentOperation<T : Parcelable> : Operation<T, EmptyState>
diff --git a/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/onscreen/OnScreenStateResolverExt.kt b/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/onscreen/OnScreenStateResolverExt.kt
index ea12b891cf..d10a3f9704 100644
--- a/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/onscreen/OnScreenStateResolverExt.kt
+++ b/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/onscreen/OnScreenStateResolverExt.kt
@@ -1,8 +1,9 @@
 package com.bumble.appyx.core.navigation.onscreen
 
+import android.os.Parcelable
 import com.bumble.appyx.core.navigation.NavElement
 
-fun <State> OnScreenStateResolver<State>.isOnScreen(element: NavElement<*, out State>): Boolean =
+fun <State : Parcelable> OnScreenStateResolver<State>.isOnScreen(element: NavElement<*, out State>): Boolean =
     if (element.transitionHistory.isEmpty()) {
         isOnScreen(element.fromState) || isOnScreen(element.targetState)
     } else {
diff --git a/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/operationstrategies/BaseOperationStrategy.kt b/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/operationstrategies/BaseOperationStrategy.kt
index 8f5a645afa..c2f5548abd 100644
--- a/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/operationstrategies/BaseOperationStrategy.kt
+++ b/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/operationstrategies/BaseOperationStrategy.kt
@@ -1,10 +1,11 @@
 package com.bumble.appyx.core.navigation.operationstrategies
 
+import android.os.Parcelable
 import com.bumble.appyx.core.navigation.Operation
 import com.bumble.appyx.core.navigation.NavModel
 import kotlinx.coroutines.CoroutineScope
 
-abstract class BaseOperationStrategy<NavTarget, State> : OperationStrategy<NavTarget, State> {
+abstract class BaseOperationStrategy<NavTarget : Parcelable, State : Parcelable> : OperationStrategy<NavTarget, State> {
 
     protected lateinit var scope: CoroutineScope
     protected lateinit var navModel: NavModel<NavTarget, State>
diff --git a/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/operationstrategies/ExecuteImmediately.kt b/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/operationstrategies/ExecuteImmediately.kt
index e70177e056..3ef25fb5c0 100644
--- a/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/operationstrategies/ExecuteImmediately.kt
+++ b/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/operationstrategies/ExecuteImmediately.kt
@@ -1,8 +1,9 @@
 package com.bumble.appyx.core.navigation.operationstrategies
 
+import android.os.Parcelable
 import com.bumble.appyx.core.navigation.Operation
 
-class ExecuteImmediately<NavTarget, State> : BaseOperationStrategy<NavTarget, State>() {
+class ExecuteImmediately<NavTarget : Parcelable, State : Parcelable> : BaseOperationStrategy<NavTarget, State>() {
 
     override fun accept(operation: Operation<NavTarget, State>) {
         executeOperation(operation)
diff --git a/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/operationstrategies/FinishTransitionsOnNewOperation.kt b/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/operationstrategies/FinishTransitionsOnNewOperation.kt
index 4da87da04a..0e58e5714e 100644
--- a/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/operationstrategies/FinishTransitionsOnNewOperation.kt
+++ b/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/operationstrategies/FinishTransitionsOnNewOperation.kt
@@ -1,10 +1,12 @@
 package com.bumble.appyx.core.navigation.operationstrategies
 
+import android.os.Parcelable
 import com.bumble.appyx.core.navigation.Operation
 import com.bumble.appyx.core.navigation.isTransitioning
 
 
-class FinishTransitionsOnNewOperation<NavTarget, State> : BaseOperationStrategy<NavTarget, State>() {
+class FinishTransitionsOnNewOperation<NavTarget : Parcelable, State : Parcelable> :
+    BaseOperationStrategy<NavTarget, State>() {
 
     override fun accept(operation: Operation<NavTarget, State>) {
         finishUnfinishedTransitions()
diff --git a/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/operationstrategies/IgnoreIfThereAreUnfinishedTransitions.kt b/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/operationstrategies/IgnoreIfThereAreUnfinishedTransitions.kt
index 92e4f2d920..206f5ae8e4 100644
--- a/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/operationstrategies/IgnoreIfThereAreUnfinishedTransitions.kt
+++ b/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/operationstrategies/IgnoreIfThereAreUnfinishedTransitions.kt
@@ -1,9 +1,11 @@
 package com.bumble.appyx.core.navigation.operationstrategies
 
+import android.os.Parcelable
 import com.bumble.appyx.core.navigation.Operation
 import com.bumble.appyx.core.navigation.isTransitioning
 
-class IgnoreIfThereAreUnfinishedTransitions<NavTarget, State> : BaseOperationStrategy<NavTarget, State>() {
+class IgnoreIfThereAreUnfinishedTransitions<NavTarget : Parcelable, State : Parcelable> :
+    BaseOperationStrategy<NavTarget, State>() {
 
     override fun accept(operation: Operation<NavTarget, State>) {
         if (hasNoUnfinishedTransitions()) {
diff --git a/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/operationstrategies/OperationStrategy.kt b/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/operationstrategies/OperationStrategy.kt
index 761cea9f6c..0ab1a76051 100644
--- a/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/operationstrategies/OperationStrategy.kt
+++ b/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/operationstrategies/OperationStrategy.kt
@@ -1,10 +1,11 @@
 package com.bumble.appyx.core.navigation.operationstrategies
 
+import android.os.Parcelable
 import com.bumble.appyx.core.navigation.Operation
 import com.bumble.appyx.core.navigation.NavModel
 import kotlinx.coroutines.CoroutineScope
 
-interface OperationStrategy<NavTarget, State> {
+interface OperationStrategy<NavTarget : Parcelable, State : Parcelable> {
 
     fun init(
         navModel: NavModel<NavTarget, State>,
diff --git a/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/operationstrategies/QueueOperations.kt b/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/operationstrategies/QueueOperations.kt
index cc56670450..d2aa7b6172 100644
--- a/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/operationstrategies/QueueOperations.kt
+++ b/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/operationstrategies/QueueOperations.kt
@@ -1,5 +1,6 @@
 package com.bumble.appyx.core.navigation.operationstrategies
 
+import android.os.Parcelable
 import com.bumble.appyx.core.navigation.Operation
 import com.bumble.appyx.core.navigation.NavElements
 import com.bumble.appyx.core.navigation.isTransitioning
@@ -7,7 +8,7 @@ import kotlinx.coroutines.Job
 import kotlinx.coroutines.launch
 import java.util.LinkedList
 
-class QueueOperations<NavTarget, State> : BaseOperationStrategy<NavTarget, State>() {
+class QueueOperations<NavTarget : Parcelable, State : Parcelable> : BaseOperationStrategy<NavTarget, State>() {
 
     private val operationQueue = LinkedList<Operation<NavTarget, State>>()
     private lateinit var collectJob: Job
diff --git a/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/transition/CombinedHandler.kt b/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/transition/CombinedHandler.kt
index f11c5af6d3..bd09621936 100644
--- a/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/transition/CombinedHandler.kt
+++ b/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/transition/CombinedHandler.kt
@@ -1,13 +1,14 @@
 package com.bumble.appyx.core.navigation.transition
 
 import android.annotation.SuppressLint
+import android.os.Parcelable
 import androidx.compose.animation.core.Transition
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.remember
 import androidx.compose.ui.Modifier
 import com.bumble.appyx.core.collections.ImmutableList
 
-class CombinedHandler<T, S>(
+class CombinedHandler<T : Parcelable, S : Parcelable>(
     private val handlers: List<ModifierTransitionHandler<T, S>>
 ) : ModifierTransitionHandler<T, S>() {
 
@@ -33,11 +34,11 @@ class CombinedHandler<T, S>(
     )
 )
 @Composable
-fun <T, S> rememberCombinedHandler(handlers: List<ModifierTransitionHandler<T, S>>): ModifierTransitionHandler<T, S> =
+fun <T : Parcelable, S : Parcelable> rememberCombinedHandler(handlers: List<ModifierTransitionHandler<T, S>>): ModifierTransitionHandler<T, S> =
     remember { CombinedHandler(handlers = handlers) }
 
 @Composable
-fun <T, S> rememberCombinedHandler(
+fun <T : Parcelable, S : Parcelable> rememberCombinedHandler(
     handlers: ImmutableList<ModifierTransitionHandler<T, S>>
 ): ModifierTransitionHandler<T, S> =
     remember(handlers) { CombinedHandler(handlers = handlers) }
diff --git a/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/transition/JumpToEndTransitionHandler.kt b/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/transition/JumpToEndTransitionHandler.kt
index 80b4365b9e..1af4c9a19d 100644
--- a/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/transition/JumpToEndTransitionHandler.kt
+++ b/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/transition/JumpToEndTransitionHandler.kt
@@ -1,11 +1,12 @@
 package com.bumble.appyx.core.navigation.transition
 
 import android.annotation.SuppressLint
+import android.os.Parcelable
 import androidx.compose.animation.core.Transition
 import androidx.compose.ui.Modifier
 
 @Suppress("TransitionPropertiesLabel")
-class JumpToEndTransitionHandler<T, S> : ModifierTransitionHandler<T, S>() {
+class JumpToEndTransitionHandler<T : Parcelable, S : Parcelable> : ModifierTransitionHandler<T, S>() {
 
     @SuppressLint("ModifierFactoryExtensionFunction")
     override fun createModifier(
diff --git a/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/transition/ModifierTransitionHandler.kt b/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/transition/ModifierTransitionHandler.kt
index 85878c0fcc..8b77a30d26 100644
--- a/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/transition/ModifierTransitionHandler.kt
+++ b/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/transition/ModifierTransitionHandler.kt
@@ -1,6 +1,7 @@
 package com.bumble.appyx.core.navigation.transition
 
 import android.annotation.SuppressLint
+import android.os.Parcelable
 import androidx.compose.animation.core.MutableTransitionState
 import androidx.compose.animation.core.Transition
 import androidx.compose.animation.core.updateTransition
@@ -12,7 +13,7 @@ import androidx.compose.ui.draw.clipToBounds
 import com.bumble.appyx.core.composable.ChildTransitionScope
 import com.bumble.appyx.core.composable.ChildTransitionScopeImpl
 
-abstract class ModifierTransitionHandler<T, S>(open val clipToBounds: Boolean = false) :
+abstract class ModifierTransitionHandler<T : Parcelable, S : Parcelable>(open val clipToBounds: Boolean = false) :
     TransitionHandler<T, S> {
 
     private val clipToBoundsModifier: Modifier by lazy(LazyThreadSafetyMode.NONE) {
diff --git a/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/transition/TransitionDescriptor.kt b/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/transition/TransitionDescriptor.kt
index cb76eab0a9..0740660d64 100644
--- a/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/transition/TransitionDescriptor.kt
+++ b/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/transition/TransitionDescriptor.kt
@@ -1,10 +1,11 @@
 package com.bumble.appyx.core.navigation.transition
 
+import android.os.Parcelable
 import androidx.compose.runtime.Immutable
 import com.bumble.appyx.core.navigation.Operation
 
 @Immutable
-data class TransitionDescriptor<NavTarget, out State>(
+data class TransitionDescriptor<NavTarget : Parcelable, out State : Parcelable>(
     val params: TransitionParams,
     val operation: Operation<NavTarget, out State>,
     val element: NavTarget,
diff --git a/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/transition/TransitionHandler.kt b/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/transition/TransitionHandler.kt
index 32dc4a1142..0e843f0c6b 100644
--- a/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/transition/TransitionHandler.kt
+++ b/libraries/core/src/main/kotlin/com/bumble/appyx/core/navigation/transition/TransitionHandler.kt
@@ -1,11 +1,12 @@
 package com.bumble.appyx.core.navigation.transition
 
+import android.os.Parcelable
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.Stable
 import com.bumble.appyx.core.composable.ChildTransitionScope
 
 @Stable
-interface TransitionHandler<T, S> {
+interface TransitionHandler<T : Parcelable, S : Parcelable> {
 
     @Composable
     fun handle(
diff --git a/libraries/core/src/main/kotlin/com/bumble/appyx/core/node/EmptyNodeViews.kt b/libraries/core/src/main/kotlin/com/bumble/appyx/core/node/EmptyNodeViews.kt
index bcbde45ca5..a52023d429 100644
--- a/libraries/core/src/main/kotlin/com/bumble/appyx/core/node/EmptyNodeViews.kt
+++ b/libraries/core/src/main/kotlin/com/bumble/appyx/core/node/EmptyNodeViews.kt
@@ -1,5 +1,6 @@
 package com.bumble.appyx.core.node
 
+import android.os.Parcelable
 import androidx.compose.runtime.Composable
 import androidx.compose.ui.Modifier
 
@@ -9,7 +10,7 @@ object EmptyNodeView : NodeView {
     override fun View(modifier: Modifier) = Unit
 }
 
-class EmptyParentNodeView<NavTarget : Any> : ParentNodeView<NavTarget> {
+class EmptyParentNodeView<NavTarget : Parcelable> : ParentNodeView<NavTarget> {
 
     @Composable
     override fun ParentNode<NavTarget>.NodeView(modifier: Modifier) = Unit
diff --git a/libraries/core/src/main/kotlin/com/bumble/appyx/core/node/ParentNode.kt b/libraries/core/src/main/kotlin/com/bumble/appyx/core/node/ParentNode.kt
index 8d2611771e..83b59e6ab6 100644
--- a/libraries/core/src/main/kotlin/com/bumble/appyx/core/node/ParentNode.kt
+++ b/libraries/core/src/main/kotlin/com/bumble/appyx/core/node/ParentNode.kt
@@ -1,5 +1,6 @@
 package com.bumble.appyx.core.node
 
+import android.os.Parcelable
 import androidx.annotation.CallSuper
 import androidx.annotation.VisibleForTesting
 import androidx.compose.runtime.Composable
@@ -49,7 +50,7 @@ import kotlin.reflect.KClass
 
 @Suppress("TooManyFunctions")
 @Stable
-abstract class ParentNode<NavTarget : Any>(
+abstract class ParentNode<NavTarget : Parcelable>(
     navModel: NavModel<NavTarget, *>,
     buildContext: BuildContext,
     view: ParentNodeView<NavTarget> = EmptyParentNodeView(),
diff --git a/libraries/core/src/main/kotlin/com/bumble/appyx/core/node/ParentNodeView.kt b/libraries/core/src/main/kotlin/com/bumble/appyx/core/node/ParentNodeView.kt
index d91e2cb1d6..9c27adef40 100644
--- a/libraries/core/src/main/kotlin/com/bumble/appyx/core/node/ParentNodeView.kt
+++ b/libraries/core/src/main/kotlin/com/bumble/appyx/core/node/ParentNodeView.kt
@@ -1,9 +1,10 @@
 package com.bumble.appyx.core.node
 
+import android.os.Parcelable
 import androidx.compose.runtime.Composable
 import androidx.compose.ui.Modifier
 
-interface ParentNodeView<NavTarget : Any> : NodeView {
+interface ParentNodeView<NavTarget : Parcelable> : NodeView {
 
     @Composable
     fun ParentNode<NavTarget>.NodeView(modifier: Modifier)
diff --git a/libraries/core/src/main/kotlin/com/bumble/appyx/navmodel/backstack/BackStack.kt b/libraries/core/src/main/kotlin/com/bumble/appyx/navmodel/backstack/BackStack.kt
index 8b001d25e7..dd41087a76 100644
--- a/libraries/core/src/main/kotlin/com/bumble/appyx/navmodel/backstack/BackStack.kt
+++ b/libraries/core/src/main/kotlin/com/bumble/appyx/navmodel/backstack/BackStack.kt
@@ -1,5 +1,6 @@
 package com.bumble.appyx.navmodel.backstack
 
+import android.os.Parcelable
 import com.bumble.appyx.core.navigation.BaseNavModel
 import com.bumble.appyx.core.navigation.Operation.Noop
 import com.bumble.appyx.core.navigation.NavKey
@@ -12,8 +13,9 @@ import com.bumble.appyx.navmodel.backstack.BackStack.State.DESTROYED
 import com.bumble.appyx.navmodel.backstack.backpresshandler.PopBackPressHandler
 import com.bumble.appyx.core.state.SavedStateMap
 import com.bumble.appyx.navmodel.backstack.BackStack.State.ACTIVE
+import kotlinx.parcelize.Parcelize
 
-class BackStack<NavTarget : Any>(
+class BackStack<NavTarget : Parcelable>(
     initialElement: NavTarget,
     savedStateMap: SavedStateMap?,
     key: String = KEY_NAV_MODEL,
@@ -29,7 +31,8 @@ class BackStack<NavTarget : Any>(
     key = key,
 ) {
 
-    enum class State {
+    @Parcelize
+    enum class State : Parcelable {
         CREATED, ACTIVE, STASHED, DESTROYED,
     }
 
diff --git a/libraries/core/src/main/kotlin/com/bumble/appyx/navmodel/backstack/BackStackExt.kt b/libraries/core/src/main/kotlin/com/bumble/appyx/navmodel/backstack/BackStackExt.kt
index 7e9b184de8..2338d8a66c 100644
--- a/libraries/core/src/main/kotlin/com/bumble/appyx/navmodel/backstack/BackStackExt.kt
+++ b/libraries/core/src/main/kotlin/com/bumble/appyx/navmodel/backstack/BackStackExt.kt
@@ -1,18 +1,19 @@
 package com.bumble.appyx.navmodel.backstack
 
+import android.os.Parcelable
 import com.bumble.appyx.navmodel.backstack.BackStack.State.ACTIVE
 
-val <T> BackStackElements<T>.active: BackStackElement<T>?
+val <T : Parcelable> BackStackElements<T>.active: BackStackElement<T>?
     get() = lastOrNull { it.targetState == ACTIVE }
 
-val <T : Any> BackStack<T>.active: BackStackElement<T>?
+val <T : Parcelable> BackStack<T>.active: BackStackElement<T>?
     get() = elements.value.active
 
-val <T> BackStackElements<T>.activeElement: T?
+val <T : Parcelable> BackStackElements<T>.activeElement: T?
     get() = active?.key?.navTarget
 
-val <T : Any> BackStack<T>.activeElement: T?
+val <T : Parcelable> BackStack<T>.activeElement: T?
     get() = elements.value.activeElement
 
-val <T> BackStackElements<T>.activeIndex: Int
+val <T : Parcelable> BackStackElements<T>.activeIndex: Int
     get() = indexOfLast { it.targetState == ACTIVE }
diff --git a/libraries/core/src/main/kotlin/com/bumble/appyx/navmodel/backstack/backpresshandler/PopBackPressHandler.kt b/libraries/core/src/main/kotlin/com/bumble/appyx/navmodel/backstack/backpresshandler/PopBackPressHandler.kt
index 666206b20a..d1e072d234 100644
--- a/libraries/core/src/main/kotlin/com/bumble/appyx/navmodel/backstack/backpresshandler/PopBackPressHandler.kt
+++ b/libraries/core/src/main/kotlin/com/bumble/appyx/navmodel/backstack/backpresshandler/PopBackPressHandler.kt
@@ -1,5 +1,6 @@
 package com.bumble.appyx.navmodel.backstack.backpresshandler
 
+import android.os.Parcelable
 import com.bumble.appyx.core.navigation.backpresshandlerstrategies.BaseBackPressHandlerStrategy
 import com.bumble.appyx.navmodel.backstack.BackStack
 import com.bumble.appyx.navmodel.backstack.BackStackElements
@@ -7,7 +8,7 @@ import com.bumble.appyx.navmodel.backstack.operation.Pop
 import kotlinx.coroutines.flow.Flow
 import kotlinx.coroutines.flow.map
 
-class PopBackPressHandler<NavTarget : Any> :
+class PopBackPressHandler<NavTarget : Parcelable> :
     BaseBackPressHandlerStrategy<NavTarget, BackStack.State>() {
 
     override val canHandleBackPressFlow: Flow<Boolean> by lazy {
diff --git a/libraries/core/src/main/kotlin/com/bumble/appyx/navmodel/backstack/operation/BackStackOperation.kt b/libraries/core/src/main/kotlin/com/bumble/appyx/navmodel/backstack/operation/BackStackOperation.kt
index 2ad7830ef3..2e8d9476d6 100644
--- a/libraries/core/src/main/kotlin/com/bumble/appyx/navmodel/backstack/operation/BackStackOperation.kt
+++ b/libraries/core/src/main/kotlin/com/bumble/appyx/navmodel/backstack/operation/BackStackOperation.kt
@@ -1,6 +1,7 @@
 package com.bumble.appyx.navmodel.backstack.operation
 
+import android.os.Parcelable
 import com.bumble.appyx.core.navigation.Operation
 import com.bumble.appyx.navmodel.backstack.BackStack
 
-interface BackStackOperation<T> : Operation<T, BackStack.State>
+interface BackStackOperation<T : Parcelable> : Operation<T, BackStack.State>
diff --git a/libraries/core/src/main/kotlin/com/bumble/appyx/navmodel/backstack/operation/NewRoot.kt b/libraries/core/src/main/kotlin/com/bumble/appyx/navmodel/backstack/operation/NewRoot.kt
index 691ad3401c..1f106c9b7a 100644
--- a/libraries/core/src/main/kotlin/com/bumble/appyx/navmodel/backstack/operation/NewRoot.kt
+++ b/libraries/core/src/main/kotlin/com/bumble/appyx/navmodel/backstack/operation/NewRoot.kt
@@ -1,5 +1,6 @@
 package com.bumble.appyx.navmodel.backstack.operation
 
+import android.os.Parcelable
 import com.bumble.appyx.core.navigation.NavKey
 import com.bumble.appyx.navmodel.backstack.BackStack
 import com.bumble.appyx.navmodel.backstack.BackStackElement
@@ -16,8 +17,8 @@ import kotlinx.parcelize.RawValue
  * [A, B, C] + NewRoot(D) = [ D ]
  */
 @Parcelize
-data class NewRoot<T : Any>(
-    private val element: @RawValue T
+data class NewRoot<T : Parcelable>(
+    private val element: T
 ) : BackStackOperation<T> {
 
     override fun isApplicable(elements: BackStackElements<T>): Boolean = true
@@ -48,6 +49,6 @@ data class NewRoot<T : Any>(
     }
 }
 
-fun <T : Any> BackStack<T>.newRoot(element: T) {
+fun <T : Parcelable> BackStack<T>.newRoot(element: T) {
     accept(NewRoot(element))
 }
diff --git a/libraries/core/src/main/kotlin/com/bumble/appyx/navmodel/backstack/operation/Pop.kt b/libraries/core/src/main/kotlin/com/bumble/appyx/navmodel/backstack/operation/Pop.kt
index 39f0ddc081..4c320b5c84 100644
--- a/libraries/core/src/main/kotlin/com/bumble/appyx/navmodel/backstack/operation/Pop.kt
+++ b/libraries/core/src/main/kotlin/com/bumble/appyx/navmodel/backstack/operation/Pop.kt
@@ -1,5 +1,6 @@
 package com.bumble.appyx.navmodel.backstack.operation
 
+import android.os.Parcelable
 import com.bumble.appyx.navmodel.backstack.BackStack
 import com.bumble.appyx.navmodel.backstack.BackStackElements
 import com.bumble.appyx.navmodel.backstack.activeIndex
@@ -11,7 +12,7 @@ import kotlinx.parcelize.Parcelize
  * [A, B, C] + Pop = [A, B]
  */
 @Parcelize
-class Pop<T : Any> : BackStackOperation<T> {
+class Pop<T : Parcelable> : BackStackOperation<T> {
 
     override fun isApplicable(elements: BackStackElements<T>): Boolean =
         elements.any { it.targetState == BackStack.State.ACTIVE } &&
@@ -46,6 +47,6 @@ class Pop<T : Any> : BackStackOperation<T> {
     override fun hashCode(): Int = this.javaClass.hashCode()
 }
 
-fun <T : Any> BackStack<T>.pop() {
+fun <T : Parcelable> BackStack<T>.pop() {
     accept(Pop())
 }
diff --git a/libraries/core/src/main/kotlin/com/bumble/appyx/navmodel/backstack/operation/Push.kt b/libraries/core/src/main/kotlin/com/bumble/appyx/navmodel/backstack/operation/Push.kt
index a2c3f82b33..439a8b8334 100644
--- a/libraries/core/src/main/kotlin/com/bumble/appyx/navmodel/backstack/operation/Push.kt
+++ b/libraries/core/src/main/kotlin/com/bumble/appyx/navmodel/backstack/operation/Push.kt
@@ -1,5 +1,6 @@
 package com.bumble.appyx.navmodel.backstack.operation
 
+import android.os.Parcelable
 import com.bumble.appyx.core.navigation.NavKey
 import com.bumble.appyx.navmodel.backstack.BackStack
 import com.bumble.appyx.navmodel.backstack.BackStackElement
@@ -17,8 +18,8 @@ import kotlinx.parcelize.RawValue
  * [A, B, C] + Push(D) = [A, B, C, D]
  */
 @Parcelize
-data class Push<T : Any>(
-    private val element: @RawValue T
+data class Push<T : Parcelable>(
+    private val element: T
 ) : BackStackOperation<T> {
 
     override fun isApplicable(elements: BackStackElements<T>): Boolean =
@@ -35,6 +36,6 @@ data class Push<T : Any>(
         )
 }
 
-fun <T : Any> BackStack<T>.push(element: T) {
+fun <T : Parcelable> BackStack<T>.push(element: T) {
     accept(Push(element))
 }
diff --git a/libraries/core/src/main/kotlin/com/bumble/appyx/navmodel/backstack/operation/Remove.kt b/libraries/core/src/main/kotlin/com/bumble/appyx/navmodel/backstack/operation/Remove.kt
index f365332b2d..674beebc0a 100644
--- a/libraries/core/src/main/kotlin/com/bumble/appyx/navmodel/backstack/operation/Remove.kt
+++ b/libraries/core/src/main/kotlin/com/bumble/appyx/navmodel/backstack/operation/Remove.kt
@@ -1,5 +1,6 @@
 package com.bumble.appyx.navmodel.backstack.operation
 
+import android.os.Parcelable
 import com.bumble.appyx.core.navigation.NavKey
 import com.bumble.appyx.navmodel.backstack.BackStack
 import com.bumble.appyx.navmodel.backstack.BackStackElements
@@ -12,7 +13,7 @@ import kotlinx.parcelize.Parcelize
  * [A, B, C] + Remove(id of B) = [A, C]
  */
 @Parcelize
-data class Remove<T : Any>(
+data class Remove<T : Parcelable>(
     private val key: NavKey<T>
 ) : BackStackOperation<T> {
 
@@ -61,6 +62,6 @@ data class Remove<T : Any>(
     }
 }
 
-fun <T : Any> BackStack<T>.remove(key: NavKey<T>) {
+fun <T : Parcelable> BackStack<T>.remove(key: NavKey<T>) {
     accept(Remove(key))
 }
diff --git a/libraries/core/src/main/kotlin/com/bumble/appyx/navmodel/backstack/operation/Replace.kt b/libraries/core/src/main/kotlin/com/bumble/appyx/navmodel/backstack/operation/Replace.kt
index ecde3a8212..9ef70f6e52 100644
--- a/libraries/core/src/main/kotlin/com/bumble/appyx/navmodel/backstack/operation/Replace.kt
+++ b/libraries/core/src/main/kotlin/com/bumble/appyx/navmodel/backstack/operation/Replace.kt
@@ -1,5 +1,6 @@
 package com.bumble.appyx.navmodel.backstack.operation
 
+import android.os.Parcelable
 import com.bumble.appyx.core.navigation.NavKey
 import com.bumble.appyx.navmodel.backstack.BackStack
 import com.bumble.appyx.navmodel.backstack.BackStack.State.ACTIVE
@@ -18,8 +19,8 @@ import kotlinx.parcelize.RawValue
  * [A, B, C] + Replace(D) = [A, B, D]
  */
 @Parcelize
-data class Replace<T : Any>(
-    private val element: @RawValue T
+data class Replace<T : Parcelable>(
+    private val element: T
 ) : BackStackOperation<T> {
 
     override fun isApplicable(elements: BackStackElements<T>): Boolean =
@@ -41,6 +42,6 @@ data class Replace<T : Any>(
     }
 }
 
-fun <T : Any> BackStack<T>.replace(element: T) {
+fun <T : Parcelable> BackStack<T>.replace(element: T) {
     accept(Replace(element))
 }
diff --git a/libraries/core/src/main/kotlin/com/bumble/appyx/navmodel/backstack/operation/SingleTop.kt b/libraries/core/src/main/kotlin/com/bumble/appyx/navmodel/backstack/operation/SingleTop.kt
index 32b1941bc7..d91fb05cef 100644
--- a/libraries/core/src/main/kotlin/com/bumble/appyx/navmodel/backstack/operation/SingleTop.kt
+++ b/libraries/core/src/main/kotlin/com/bumble/appyx/navmodel/backstack/operation/SingleTop.kt
@@ -1,5 +1,6 @@
 package com.bumble.appyx.navmodel.backstack.operation
 
+import android.os.Parcelable
 import com.bumble.appyx.core.navigation.NavKey
 import com.bumble.appyx.navmodel.backstack.BackStack
 import com.bumble.appyx.navmodel.backstack.BackStackElement
@@ -18,11 +19,11 @@ import kotlinx.parcelize.RawValue
  * [A, B, C, D] + SingleTop(B') = [A, B']        // of same type but not equals, acts as n * Pop + Replace
  * [A, B, C, D] + SingleTop(E) = [A, B, C, D, E] // not found, acts as Push
  */
-sealed class SingleTop<T : Any> : BackStackOperation<T> {
+sealed class SingleTop<T : Parcelable> : BackStackOperation<T> {
 
     @Parcelize
-    class SingleTopReactivateBackStackOperation<T : Any>(
-        private val element: @RawValue T,
+    class SingleTopReactivateBackStackOperation<T : Parcelable>(
+        private val element: T,
         private val position: Int
     ) : SingleTop<T>() {
 
@@ -52,8 +53,8 @@ sealed class SingleTop<T : Any> : BackStackOperation<T> {
     }
 
     @Parcelize
-    class SingleTopReplaceBackStackOperation<T : Any>(
-        private val element: @RawValue T,
+    class SingleTopReplaceBackStackOperation<T : Parcelable>(
+        private val element: T,
         private val position: Int,
     ) : SingleTop<T>() {
 
@@ -85,7 +86,7 @@ sealed class SingleTop<T : Any> : BackStackOperation<T> {
 
     companion object {
 
-        fun <T : Any> init(
+        fun <T : Parcelable> init(
             element: T,
             elements: BackStackElements<T>
         ): BackStackOperation<T> {
@@ -112,6 +113,6 @@ sealed class SingleTop<T : Any> : BackStackOperation<T> {
     }
 }
 
-fun <T : Any> BackStack<T>.singleTop(element: T) {
+fun <T : Parcelable> BackStack<T>.singleTop(element: T) {
     accept(SingleTop.init(element, elements.value))
 }
diff --git a/libraries/core/src/main/kotlin/com/bumble/appyx/navmodel/backstack/transitionhandler/BackStackFader.kt b/libraries/core/src/main/kotlin/com/bumble/appyx/navmodel/backstack/transitionhandler/BackStackFader.kt
index b781fccb10..8f05138825 100644
--- a/libraries/core/src/main/kotlin/com/bumble/appyx/navmodel/backstack/transitionhandler/BackStackFader.kt
+++ b/libraries/core/src/main/kotlin/com/bumble/appyx/navmodel/backstack/transitionhandler/BackStackFader.kt
@@ -1,6 +1,7 @@
 package com.bumble.appyx.navmodel.backstack.transitionhandler
 
 import android.annotation.SuppressLint
+import android.os.Parcelable
 import androidx.compose.animation.core.Transition
 import androidx.compose.animation.core.animateFloat
 import androidx.compose.animation.core.spring
@@ -15,7 +16,7 @@ import com.bumble.appyx.core.navigation.transition.TransitionSpec
 import com.bumble.appyx.navmodel.backstack.BackStack
 
 @Suppress("TransitionPropertiesLabel")
-class BackStackFader<T>(
+class BackStackFader<T : Parcelable>(
     private val transitionSpec: TransitionSpec<BackStack.State, Float> = { spring() }
 ) : ModifierTransitionHandler<T, BackStack.State>() {
 
@@ -39,7 +40,7 @@ class BackStackFader<T>(
 }
 
 @Composable
-fun <T> rememberBackstackFader(
+fun <T : Parcelable> rememberBackstackFader(
     transitionSpec: TransitionSpec<BackStack.State, Float> = { spring() }
 ): ModifierTransitionHandler<T, BackStack.State> = remember {
     BackStackFader(transitionSpec = transitionSpec)
diff --git a/libraries/core/src/main/kotlin/com/bumble/appyx/navmodel/backstack/transitionhandler/BackStackSlider.kt b/libraries/core/src/main/kotlin/com/bumble/appyx/navmodel/backstack/transitionhandler/BackStackSlider.kt
index abfa73fb09..4bbc70c32a 100644
--- a/libraries/core/src/main/kotlin/com/bumble/appyx/navmodel/backstack/transitionhandler/BackStackSlider.kt
+++ b/libraries/core/src/main/kotlin/com/bumble/appyx/navmodel/backstack/transitionhandler/BackStackSlider.kt
@@ -1,6 +1,7 @@
 package com.bumble.appyx.navmodel.backstack.transitionhandler
 
 import android.annotation.SuppressLint
+import android.os.Parcelable
 import androidx.compose.animation.core.Spring
 import androidx.compose.animation.core.Transition
 import androidx.compose.animation.core.animateOffset
@@ -27,7 +28,7 @@ import com.bumble.appyx.navmodel.backstack.operation.SingleTop.SingleTopReplaceB
 import com.bumble.appyx.navmodel.toIntOffset
 
 @Suppress("TransitionPropertiesLabel")
-class BackStackSlider<T>(
+class BackStackSlider<T : Parcelable>(
     private val transitionSpec: TransitionSpec<BackStack.State, Offset> = {
         spring(stiffness = Spring.StiffnessVeryLow)
     },
@@ -77,7 +78,7 @@ class BackStackSlider<T>(
 }
 
 @Composable
-fun <T> rememberBackstackSlider(
+fun <T : Parcelable> rememberBackstackSlider(
     transitionSpec: TransitionSpec<BackStack.State, Offset> = { spring(stiffness = Spring.StiffnessVeryLow) },
     clipToBounds: Boolean = false
 ): ModifierTransitionHandler<T, BackStack.State> = remember {
diff --git a/libraries/core/src/main/kotlin/com/bumble/appyx/navmodel/spotlight/Spotlight.kt b/libraries/core/src/main/kotlin/com/bumble/appyx/navmodel/spotlight/Spotlight.kt
index ac8317193c..a8e75c8756 100644
--- a/libraries/core/src/main/kotlin/com/bumble/appyx/navmodel/spotlight/Spotlight.kt
+++ b/libraries/core/src/main/kotlin/com/bumble/appyx/navmodel/spotlight/Spotlight.kt
@@ -1,5 +1,6 @@
 package com.bumble.appyx.navmodel.spotlight
 
+import android.os.Parcelable
 import com.bumble.appyx.core.navigation.BaseNavModel
 import com.bumble.appyx.core.navigation.backpresshandlerstrategies.BackPressHandlerStrategy
 import com.bumble.appyx.core.navigation.onscreen.OnScreenStateResolver
@@ -9,8 +10,9 @@ import com.bumble.appyx.core.state.SavedStateMap
 import com.bumble.appyx.navmodel.spotlight.Spotlight.State
 import com.bumble.appyx.navmodel.spotlight.backpresshandler.GoToDefault
 import com.bumble.appyx.navmodel.spotlight.operation.toSpotlightElements
+import kotlinx.parcelize.Parcelize
 
-class Spotlight<NavTarget : Any>(
+class Spotlight<NavTarget : Parcelable>(
     items: List<NavTarget>,
     initialActiveIndex: Int = 0,
     savedStateMap: SavedStateMap?,
@@ -29,7 +31,8 @@ class Spotlight<NavTarget : Any>(
     key = key,
 ) {
 
-    enum class State {
+    @Parcelize
+    enum class State : Parcelable {
         INACTIVE_BEFORE, ACTIVE, INACTIVE_AFTER;
     }
 
diff --git a/libraries/core/src/main/kotlin/com/bumble/appyx/navmodel/spotlight/SpotlightElementExt.kt b/libraries/core/src/main/kotlin/com/bumble/appyx/navmodel/spotlight/SpotlightElementExt.kt
index 4bf5a184c9..bc06a8a9dd 100644
--- a/libraries/core/src/main/kotlin/com/bumble/appyx/navmodel/spotlight/SpotlightElementExt.kt
+++ b/libraries/core/src/main/kotlin/com/bumble/appyx/navmodel/spotlight/SpotlightElementExt.kt
@@ -1,9 +1,10 @@
 package com.bumble.appyx.navmodel.spotlight
 
+import android.os.Parcelable
 import com.bumble.appyx.navmodel.spotlight.Spotlight.State.ACTIVE
 
-val <T> SpotlightElements<T>.current: SpotlightElement<T>?
+val <T : Parcelable> SpotlightElements<T>.current: SpotlightElement<T>?
     get() = this.lastOrNull { it.targetState == ACTIVE }
 
-val <T> SpotlightElements<T>.currentIndex: Int
+val <T : Parcelable> SpotlightElements<T>.currentIndex: Int
     get() = this.indexOfLast { it.targetState == ACTIVE }
diff --git a/libraries/core/src/main/kotlin/com/bumble/appyx/navmodel/spotlight/SpotlightExt.kt b/libraries/core/src/main/kotlin/com/bumble/appyx/navmodel/spotlight/SpotlightExt.kt
index ffaa66bc1c..0f5e40540f 100644
--- a/libraries/core/src/main/kotlin/com/bumble/appyx/navmodel/spotlight/SpotlightExt.kt
+++ b/libraries/core/src/main/kotlin/com/bumble/appyx/navmodel/spotlight/SpotlightExt.kt
@@ -1,18 +1,19 @@
 package com.bumble.appyx.navmodel.spotlight
 
+import android.os.Parcelable
 import kotlinx.coroutines.flow.map
 
-fun <T : Any> Spotlight<T>.hasNext() =
+fun <T : Parcelable> Spotlight<T>.hasNext() =
     elements.map { value -> value.lastIndex != elements.value.currentIndex }
 
-fun <T : Any> Spotlight<T>.hasPrevious() =
+fun <T : Parcelable> Spotlight<T>.hasPrevious() =
     elements.map { value -> value.currentIndex != 0 }
 
-fun <T : Any> Spotlight<T>.activeIndex() =
+fun <T : Parcelable> Spotlight<T>.activeIndex() =
     elements.map { value -> value.currentIndex }
 
-fun <T : Any> Spotlight<T>.current() =
+fun <T : Parcelable> Spotlight<T>.current() =
     elements.map { value -> value.current?.key?.navTarget }
 
-fun <T : Any> Spotlight<T>.elementsCount() =
+fun <T : Parcelable> Spotlight<T>.elementsCount() =
     elements.value.size
diff --git a/libraries/core/src/main/kotlin/com/bumble/appyx/navmodel/spotlight/backpresshandler/GoToDefault.kt b/libraries/core/src/main/kotlin/com/bumble/appyx/navmodel/spotlight/backpresshandler/GoToDefault.kt
index 0e85f9555b..8d8e950023 100644
--- a/libraries/core/src/main/kotlin/com/bumble/appyx/navmodel/spotlight/backpresshandler/GoToDefault.kt
+++ b/libraries/core/src/main/kotlin/com/bumble/appyx/navmodel/spotlight/backpresshandler/GoToDefault.kt
@@ -1,5 +1,6 @@
 package com.bumble.appyx.navmodel.spotlight.backpresshandler
 
+import android.os.Parcelable
 import com.bumble.appyx.core.navigation.backpresshandlerstrategies.BaseBackPressHandlerStrategy
 import com.bumble.appyx.navmodel.spotlight.Spotlight
 import com.bumble.appyx.navmodel.spotlight.Spotlight.State.ACTIVE
@@ -8,7 +9,7 @@ import com.bumble.appyx.navmodel.spotlight.operation.Activate
 import kotlinx.coroutines.flow.Flow
 import kotlinx.coroutines.flow.map
 
-class GoToDefault<NavTarget : Any>(
+class GoToDefault<NavTarget : Parcelable>(
     private val defaultElementIndex: Int = 0
 ) : BaseBackPressHandlerStrategy<NavTarget, Spotlight.State>() {
 
diff --git a/libraries/core/src/main/kotlin/com/bumble/appyx/navmodel/spotlight/backpresshandler/GoToPrevious.kt b/libraries/core/src/main/kotlin/com/bumble/appyx/navmodel/spotlight/backpresshandler/GoToPrevious.kt
index 604d861342..faa669afb2 100644
--- a/libraries/core/src/main/kotlin/com/bumble/appyx/navmodel/spotlight/backpresshandler/GoToPrevious.kt
+++ b/libraries/core/src/main/kotlin/com/bumble/appyx/navmodel/spotlight/backpresshandler/GoToPrevious.kt
@@ -1,5 +1,6 @@
 package com.bumble.appyx.navmodel.spotlight.backpresshandler
 
+import android.os.Parcelable
 import com.bumble.appyx.core.navigation.backpresshandlerstrategies.BaseBackPressHandlerStrategy
 import com.bumble.appyx.navmodel.spotlight.Spotlight
 import com.bumble.appyx.navmodel.spotlight.SpotlightElements
@@ -7,7 +8,7 @@ import com.bumble.appyx.navmodel.spotlight.operation.Previous
 import kotlinx.coroutines.flow.Flow
 import kotlinx.coroutines.flow.map
 
-class GoToPrevious<NavTarget : Any> :
+class GoToPrevious<NavTarget : Parcelable> :
     BaseBackPressHandlerStrategy<NavTarget, Spotlight.State>() {
 
     override val canHandleBackPressFlow: Flow<Boolean> by lazy {
diff --git a/libraries/core/src/main/kotlin/com/bumble/appyx/navmodel/spotlight/backpresshandler/UndoHistory.kt b/libraries/core/src/main/kotlin/com/bumble/appyx/navmodel/spotlight/backpresshandler/UndoHistory.kt
index 53b52a665d..232aca6b1b 100644
--- a/libraries/core/src/main/kotlin/com/bumble/appyx/navmodel/spotlight/backpresshandler/UndoHistory.kt
+++ b/libraries/core/src/main/kotlin/com/bumble/appyx/navmodel/spotlight/backpresshandler/UndoHistory.kt
@@ -1,5 +1,6 @@
 package com.bumble.appyx.navmodel.spotlight.backpresshandler
 
+import android.os.Parcelable
 import com.bumble.appyx.core.navigation.backpresshandlerstrategies.BaseBackPressHandlerStrategy
 import com.bumble.appyx.navmodel.spotlight.Spotlight
 import com.bumble.appyx.navmodel.spotlight.Spotlight.State.ACTIVE
@@ -8,7 +9,7 @@ import com.bumble.appyx.navmodel.spotlight.operation.Activate
 import kotlinx.coroutines.flow.Flow
 import kotlinx.coroutines.flow.map
 
-class UndoHistory<NavTarget : Any>(
+class UndoHistory<NavTarget : Parcelable>(
     private val historyLimit: Int = 10
 ) : BaseBackPressHandlerStrategy<NavTarget, Spotlight.State>() {
 
diff --git a/libraries/core/src/main/kotlin/com/bumble/appyx/navmodel/spotlight/operation/Activate.kt b/libraries/core/src/main/kotlin/com/bumble/appyx/navmodel/spotlight/operation/Activate.kt
index 13e08c5f5f..62ddec5f08 100644
--- a/libraries/core/src/main/kotlin/com/bumble/appyx/navmodel/spotlight/operation/Activate.kt
+++ b/libraries/core/src/main/kotlin/com/bumble/appyx/navmodel/spotlight/operation/Activate.kt
@@ -1,5 +1,6 @@
 package com.bumble.appyx.navmodel.spotlight.operation
 
+import android.os.Parcelable
 import com.bumble.appyx.core.navigation.NavElements
 import com.bumble.appyx.navmodel.spotlight.Spotlight
 import com.bumble.appyx.navmodel.spotlight.Spotlight.State
@@ -7,7 +8,7 @@ import com.bumble.appyx.navmodel.spotlight.currentIndex
 import kotlinx.parcelize.Parcelize
 
 @Parcelize
-class Activate<T : Any>(
+class Activate<T : Parcelable>(
     private val index: Int
 ) : SpotlightOperation<T> {
 
@@ -43,6 +44,6 @@ class Activate<T : Any>(
 }
 
 
-fun <T : Any> Spotlight<T>.activate(index: Int) {
+fun <T : Parcelable> Spotlight<T>.activate(index: Int) {
     accept(Activate(index))
 }
diff --git a/libraries/core/src/main/kotlin/com/bumble/appyx/navmodel/spotlight/operation/Next.kt b/libraries/core/src/main/kotlin/com/bumble/appyx/navmodel/spotlight/operation/Next.kt
index 7a629b59d5..0f9fd6d117 100644
--- a/libraries/core/src/main/kotlin/com/bumble/appyx/navmodel/spotlight/operation/Next.kt
+++ b/libraries/core/src/main/kotlin/com/bumble/appyx/navmodel/spotlight/operation/Next.kt
@@ -1,5 +1,6 @@
 package com.bumble.appyx.navmodel.spotlight.operation
 
+import android.os.Parcelable
 import com.bumble.appyx.core.navigation.NavElements
 import com.bumble.appyx.navmodel.spotlight.Spotlight
 import com.bumble.appyx.navmodel.spotlight.Spotlight.State
@@ -9,7 +10,7 @@ import com.bumble.appyx.navmodel.spotlight.Spotlight.State.INACTIVE_BEFORE
 import kotlinx.parcelize.Parcelize
 
 @Parcelize
-class Next<T : Any> : SpotlightOperation<T> {
+class Next<T : Parcelable> : SpotlightOperation<T> {
 
     override fun isApplicable(elements: NavElements<T, State>) =
         elements.any { it.fromState == INACTIVE_AFTER && it.targetState == INACTIVE_AFTER }
@@ -40,7 +41,7 @@ class Next<T : Any> : SpotlightOperation<T> {
     }
 }
 
-fun <T : Any> Spotlight<T>.next() {
+fun <T : Parcelable> Spotlight<T>.next() {
     accept(Next())
 }
 
diff --git a/libraries/core/src/main/kotlin/com/bumble/appyx/navmodel/spotlight/operation/Previous.kt b/libraries/core/src/main/kotlin/com/bumble/appyx/navmodel/spotlight/operation/Previous.kt
index 7a8b138630..125b44eee2 100644
--- a/libraries/core/src/main/kotlin/com/bumble/appyx/navmodel/spotlight/operation/Previous.kt
+++ b/libraries/core/src/main/kotlin/com/bumble/appyx/navmodel/spotlight/operation/Previous.kt
@@ -1,5 +1,6 @@
 package com.bumble.appyx.navmodel.spotlight.operation
 
+import android.os.Parcelable
 import com.bumble.appyx.core.navigation.NavElements
 import com.bumble.appyx.navmodel.spotlight.Spotlight
 import com.bumble.appyx.navmodel.spotlight.Spotlight.State.ACTIVE
@@ -9,7 +10,7 @@ import kotlinx.parcelize.Parcelize
 
 
 @Parcelize
-class Previous<T : Any> : SpotlightOperation<T> {
+class Previous<T : Parcelable> : SpotlightOperation<T> {
 
     override fun isApplicable(elements: NavElements<T, Spotlight.State>) =
         elements.any { it.fromState == INACTIVE_BEFORE && it.targetState == INACTIVE_BEFORE }
@@ -42,7 +43,7 @@ class Previous<T : Any> : SpotlightOperation<T> {
     }
 }
 
-fun <T : Any> Spotlight<T>.previous() {
+fun <T : Parcelable> Spotlight<T>.previous() {
     accept(Previous())
 }
 
diff --git a/libraries/core/src/main/kotlin/com/bumble/appyx/navmodel/spotlight/operation/UpdateElements.kt b/libraries/core/src/main/kotlin/com/bumble/appyx/navmodel/spotlight/operation/UpdateElements.kt
index 336c42eedf..63dab3effb 100644
--- a/libraries/core/src/main/kotlin/com/bumble/appyx/navmodel/spotlight/operation/UpdateElements.kt
+++ b/libraries/core/src/main/kotlin/com/bumble/appyx/navmodel/spotlight/operation/UpdateElements.kt
@@ -1,5 +1,6 @@
 package com.bumble.appyx.navmodel.spotlight.operation
 
+import android.os.Parcelable
 import com.bumble.appyx.core.navigation.Operation.Noop
 import com.bumble.appyx.core.navigation.NavElements
 import com.bumble.appyx.core.navigation.NavKey
@@ -14,8 +15,8 @@ import kotlinx.parcelize.Parcelize
 import kotlinx.parcelize.RawValue
 
 @Parcelize
-class UpdateElements<T : Any>(
-    private val elements: @RawValue List<T>,
+class UpdateElements<T : Parcelable>(
+    private val elements: List<T>,
     private val initialActiveIndex: Int? = null,
 ) : SpotlightOperation<T> {
 
@@ -46,14 +47,14 @@ class UpdateElements<T : Any>(
     }
 }
 
-fun <T : Any> Spotlight<T>.updateElements(
+fun <T : Parcelable> Spotlight<T>.updateElements(
     items: List<T>,
     initialActiveItem: Int? = null
 ) {
     accept(UpdateElements(items, initialActiveItem))
 }
 
-internal fun <T> List<T>.toSpotlightElements(activeIndex: Int): SpotlightElements<T> =
+internal fun <T : Parcelable> List<T>.toSpotlightElements(activeIndex: Int): SpotlightElements<T> =
     mapIndexed { index, item ->
         val state = when {
             index < activeIndex -> INACTIVE_BEFORE
diff --git a/libraries/core/src/main/kotlin/com/bumble/appyx/navmodel/spotlight/transitionhandler/SpotlightFader.kt b/libraries/core/src/main/kotlin/com/bumble/appyx/navmodel/spotlight/transitionhandler/SpotlightFader.kt
index 0299f43171..51b1336995 100644
--- a/libraries/core/src/main/kotlin/com/bumble/appyx/navmodel/spotlight/transitionhandler/SpotlightFader.kt
+++ b/libraries/core/src/main/kotlin/com/bumble/appyx/navmodel/spotlight/transitionhandler/SpotlightFader.kt
@@ -1,6 +1,7 @@
 package com.bumble.appyx.navmodel.spotlight.transitionhandler
 
 import android.annotation.SuppressLint
+import android.os.Parcelable
 import androidx.compose.animation.core.Transition
 import androidx.compose.animation.core.animateFloat
 import androidx.compose.animation.core.spring
@@ -16,7 +17,7 @@ import com.bumble.appyx.navmodel.spotlight.Spotlight
 
 @Suppress("TransitionPropertiesLabel")
 
-class SpotlightFader<T>(
+class SpotlightFader<T : Parcelable>(
     private val transitionSpec: TransitionSpec<Spotlight.State, Float> = { spring() }
 ) : ModifierTransitionHandler<T, Spotlight.State>() {
 
@@ -40,7 +41,7 @@ class SpotlightFader<T>(
 }
 
 @Composable
-fun <T> rememberSpotlightFader(
+fun <T : Parcelable> rememberSpotlightFader(
     transitionSpec: TransitionSpec<Spotlight.State, Float> = { spring() }
 ): ModifierTransitionHandler<T, Spotlight.State> = remember {
     SpotlightFader(transitionSpec = transitionSpec)
diff --git a/libraries/core/src/main/kotlin/com/bumble/appyx/navmodel/spotlight/transitionhandler/SpotlightSlider.kt b/libraries/core/src/main/kotlin/com/bumble/appyx/navmodel/spotlight/transitionhandler/SpotlightSlider.kt
index 9bdb12c048..d4322837bc 100644
--- a/libraries/core/src/main/kotlin/com/bumble/appyx/navmodel/spotlight/transitionhandler/SpotlightSlider.kt
+++ b/libraries/core/src/main/kotlin/com/bumble/appyx/navmodel/spotlight/transitionhandler/SpotlightSlider.kt
@@ -1,6 +1,7 @@
 package com.bumble.appyx.navmodel.spotlight.transitionhandler
 
 import android.annotation.SuppressLint
+import android.os.Parcelable
 import androidx.compose.animation.core.Spring
 import androidx.compose.animation.core.Transition
 import androidx.compose.animation.core.animateOffset
@@ -19,7 +20,7 @@ import com.bumble.appyx.navmodel.spotlight.Spotlight
 import com.bumble.appyx.navmodel.toIntOffset
 
 @Suppress("TransitionPropertiesLabel")
-class SpotlightSlider<T>(
+class SpotlightSlider<T : Parcelable>(
     private val transitionSpec: TransitionSpec<Spotlight.State, Offset> = {
         spring(stiffness = Spring.StiffnessVeryLow)
     },
@@ -57,7 +58,7 @@ class SpotlightSlider<T>(
 }
 
 @Composable
-fun <T> rememberSpotlightSlider(
+fun <T : Parcelable> rememberSpotlightSlider(
     transitionSpec: TransitionSpec<Spotlight.State, Offset> = { spring(stiffness = Spring.StiffnessVeryLow) },
     clipToBounds: Boolean = false
 ): ModifierTransitionHandler<T, Spotlight.State> = remember {
diff --git a/samples/app/src/main/kotlin/com/bumble/appyx/app/node/backstack/InsideTheBackStack.kt b/samples/app/src/main/kotlin/com/bumble/appyx/app/node/backstack/InsideTheBackStack.kt
index 4dd7c01fe9..28a89ad15a 100644
--- a/samples/app/src/main/kotlin/com/bumble/appyx/app/node/backstack/InsideTheBackStack.kt
+++ b/samples/app/src/main/kotlin/com/bumble/appyx/app/node/backstack/InsideTheBackStack.kt
@@ -1,5 +1,6 @@
 package com.bumble.appyx.app.node.backstack
 
+import android.os.Parcelable
 import androidx.compose.foundation.background
 import androidx.compose.foundation.layout.Arrangement
 import androidx.compose.foundation.layout.Box
@@ -30,6 +31,7 @@ import com.bumble.appyx.core.node.Node
 import com.bumble.appyx.core.node.ParentNode
 import kotlinx.coroutines.delay
 import kotlinx.coroutines.isActive
+import kotlinx.parcelize.Parcelize
 
 class InsideTheBackStack(
     buildContext: BuildContext,
@@ -61,7 +63,8 @@ class InsideTheBackStack(
         }
     }
 
-    sealed class NavTarget {
+    sealed class NavTarget : Parcelable {
+        @Parcelize
         data class Child(val index: Int) : NavTarget() {
             override fun toString(): String = index.toString()
         }
diff --git a/samples/app/src/main/kotlin/com/bumble/appyx/app/node/backstack/app/composable/PeekInsideBackStack.kt b/samples/app/src/main/kotlin/com/bumble/appyx/app/node/backstack/app/composable/PeekInsideBackStack.kt
index dc1e1950b1..e500c615fb 100644
--- a/samples/app/src/main/kotlin/com/bumble/appyx/app/node/backstack/app/composable/PeekInsideBackStack.kt
+++ b/samples/app/src/main/kotlin/com/bumble/appyx/app/node/backstack/app/composable/PeekInsideBackStack.kt
@@ -1,5 +1,6 @@
 package com.bumble.appyx.app.node.backstack.app.composable
 
+import android.os.Parcelable
 import androidx.compose.foundation.background
 import androidx.compose.foundation.border
 import androidx.compose.foundation.isSystemInDarkTheme
@@ -35,7 +36,7 @@ import com.bumble.appyx.core.navigation.NavElement
 import java.util.Locale
 
 @Composable
-fun <T : Any> PeekInsideBackStack(
+fun <T : Parcelable> PeekInsideBackStack(
     backStack: IndexedBackStack<T>,
     modifier: Modifier = Modifier
 ) {
@@ -63,7 +64,7 @@ fun <T : Any> PeekInsideBackStack(
 }
 
 @Composable
-private fun <T> BackStackElement(
+private fun <T : Parcelable> BackStackElement(
     element: NavElement<T, IndexedBackStack.State>,
 ) {
     Column(
diff --git a/samples/app/src/main/kotlin/com/bumble/appyx/app/node/backstack/app/indexedbackstack/IndexedBackStack.kt b/samples/app/src/main/kotlin/com/bumble/appyx/app/node/backstack/app/indexedbackstack/IndexedBackStack.kt
index aeb1973213..fa7172d197 100644
--- a/samples/app/src/main/kotlin/com/bumble/appyx/app/node/backstack/app/indexedbackstack/IndexedBackStack.kt
+++ b/samples/app/src/main/kotlin/com/bumble/appyx/app/node/backstack/app/indexedbackstack/IndexedBackStack.kt
@@ -1,12 +1,14 @@
 package com.bumble.appyx.app.node.backstack.app.indexedbackstack
 
+import android.os.Parcelable
 import com.bumble.appyx.core.navigation.BaseNavModel
 import com.bumble.appyx.core.navigation.NavElements
 import com.bumble.appyx.core.navigation.NavKey
 import com.bumble.appyx.core.navigation.Operation
 import com.bumble.appyx.core.state.SavedStateMap
+import kotlinx.parcelize.Parcelize
 
-class IndexedBackStack<NavTarget : Any>(
+class IndexedBackStack<NavTarget: Parcelable>(
     savedState: SavedStateMap?,
     initialElement: NavTarget
 ) : BaseNavModel<NavTarget, IndexedBackStack.State>(
@@ -15,14 +17,20 @@ class IndexedBackStack<NavTarget : Any>(
     savedStateMap = savedState
 ) {
 
-    sealed interface State {
+    sealed interface State : Parcelable {
+        @Parcelize
         object Created : State
+
+        @Parcelize
         object Active : State
+
+        @Parcelize
         class Stashed(
             val index: Int,
             val size: Int
         ) : State
 
+        @Parcelize
         object Destroyed : State
     }
 
diff --git a/samples/app/src/main/kotlin/com/bumble/appyx/app/node/backstack/app/indexedbackstack/operation/IndexedBackStackOperation.kt b/samples/app/src/main/kotlin/com/bumble/appyx/app/node/backstack/app/indexedbackstack/operation/IndexedBackStackOperation.kt
index 16f8282f57..c0782f9c79 100644
--- a/samples/app/src/main/kotlin/com/bumble/appyx/app/node/backstack/app/indexedbackstack/operation/IndexedBackStackOperation.kt
+++ b/samples/app/src/main/kotlin/com/bumble/appyx/app/node/backstack/app/indexedbackstack/operation/IndexedBackStackOperation.kt
@@ -1,6 +1,7 @@
 package com.bumble.appyx.app.node.backstack.app.indexedbackstack.operation
 
+import android.os.Parcelable
 import com.bumble.appyx.app.node.backstack.app.indexedbackstack.IndexedBackStack
 import com.bumble.appyx.core.navigation.Operation
 
-interface IndexedBackStackOperation<T> : Operation<T, IndexedBackStack.State>
+interface IndexedBackStackOperation<T : Parcelable> : Operation<T, IndexedBackStack.State>
diff --git a/samples/app/src/main/kotlin/com/bumble/appyx/app/node/backstack/app/indexedbackstack/operation/Pop.kt b/samples/app/src/main/kotlin/com/bumble/appyx/app/node/backstack/app/indexedbackstack/operation/Pop.kt
index 67e9997cdb..6b3f18c45b 100644
--- a/samples/app/src/main/kotlin/com/bumble/appyx/app/node/backstack/app/indexedbackstack/operation/Pop.kt
+++ b/samples/app/src/main/kotlin/com/bumble/appyx/app/node/backstack/app/indexedbackstack/operation/Pop.kt
@@ -1,5 +1,6 @@
 package com.bumble.appyx.app.node.backstack.app.indexedbackstack.operation
 
+import android.os.Parcelable
 import com.bumble.appyx.app.node.backstack.app.indexedbackstack.IndexedBackStack
 import com.bumble.appyx.app.node.backstack.app.indexedbackstack.IndexedBackStack.State
 import com.bumble.appyx.app.node.backstack.app.indexedbackstack.IndexedBackStack.State.Active
@@ -9,7 +10,7 @@ import com.bumble.appyx.core.navigation.NavElements
 import kotlinx.parcelize.Parcelize
 
 @Parcelize
-class Pop<T : Any> : IndexedBackStackOperation<T> {
+class Pop<T : Parcelable> : IndexedBackStackOperation<T> {
 
     override fun isApplicable(elements: NavElements<T, State>): Boolean =
         elements.any { it.targetState is Active } &&
@@ -25,7 +26,7 @@ class Pop<T : Any> : IndexedBackStackOperation<T> {
     }
 }
 
-fun <T : Any> IndexedBackStack<T>.pop() {
+fun <T : Parcelable> IndexedBackStack<T>.pop() {
     accept(Pop())
     accept(UpdateSize())
 }
diff --git a/samples/app/src/main/kotlin/com/bumble/appyx/app/node/backstack/app/indexedbackstack/operation/Push.kt b/samples/app/src/main/kotlin/com/bumble/appyx/app/node/backstack/app/indexedbackstack/operation/Push.kt
index 8c27b76259..8fed54a570 100644
--- a/samples/app/src/main/kotlin/com/bumble/appyx/app/node/backstack/app/indexedbackstack/operation/Push.kt
+++ b/samples/app/src/main/kotlin/com/bumble/appyx/app/node/backstack/app/indexedbackstack/operation/Push.kt
@@ -1,5 +1,6 @@
 package com.bumble.appyx.app.node.backstack.app.indexedbackstack.operation
 
+import android.os.Parcelable
 import com.bumble.appyx.app.node.backstack.app.indexedbackstack.IndexedBackStack
 import com.bumble.appyx.app.node.backstack.app.indexedbackstack.IndexedBackStack.State.Created
 import com.bumble.appyx.app.node.backstack.app.indexedbackstack.IndexedBackStack.State.Active
@@ -11,8 +12,8 @@ import kotlinx.parcelize.Parcelize
 import kotlinx.parcelize.RawValue
 
 @Parcelize
-class Push<T : Any>(
-    private val element: @RawValue T
+class Push<T : Parcelable>(
+    private val element: T
 ) : IndexedBackStackOperation<T> {
 
     override fun isApplicable(elements: NavElements<T, IndexedBackStack.State>): Boolean =
@@ -36,7 +37,7 @@ class Push<T : Any>(
     }
 }
 
-fun <T : Any> IndexedBackStack<T>.push(element: T) {
+fun <T : Parcelable> IndexedBackStack<T>.push(element: T) {
     accept(Push(element))
     accept(UpdateSize())
 }
diff --git a/samples/app/src/main/kotlin/com/bumble/appyx/app/node/backstack/app/indexedbackstack/operation/UpdateSize.kt b/samples/app/src/main/kotlin/com/bumble/appyx/app/node/backstack/app/indexedbackstack/operation/UpdateSize.kt
index c369e7b129..4ab04d6307 100644
--- a/samples/app/src/main/kotlin/com/bumble/appyx/app/node/backstack/app/indexedbackstack/operation/UpdateSize.kt
+++ b/samples/app/src/main/kotlin/com/bumble/appyx/app/node/backstack/app/indexedbackstack/operation/UpdateSize.kt
@@ -1,5 +1,6 @@
 package com.bumble.appyx.app.node.backstack.app.indexedbackstack.operation
 
+import android.os.Parcelable
 import com.bumble.appyx.app.node.backstack.app.indexedbackstack.IndexedBackStack
 import com.bumble.appyx.app.node.backstack.app.indexedbackstack.IndexedBackStack.State.Destroyed
 import com.bumble.appyx.app.node.backstack.app.indexedbackstack.IndexedBackStack.State.Stashed
@@ -7,7 +8,7 @@ import com.bumble.appyx.core.navigation.NavElements
 import kotlinx.parcelize.Parcelize
 
 @Parcelize
-class UpdateSize<T : Any> : IndexedBackStackOperation<T> {
+class UpdateSize<T : Parcelable> : IndexedBackStackOperation<T> {
 
     override fun isApplicable(elements: NavElements<T, IndexedBackStack.State>): Boolean = true
 
diff --git a/samples/app/src/main/kotlin/com/bumble/appyx/app/node/backstack/app/indexedbackstack/transition/RecentsTransitionHandler.kt b/samples/app/src/main/kotlin/com/bumble/appyx/app/node/backstack/app/indexedbackstack/transition/RecentsTransitionHandler.kt
index 9baffbb56c..3b83d2850f 100644
--- a/samples/app/src/main/kotlin/com/bumble/appyx/app/node/backstack/app/indexedbackstack/transition/RecentsTransitionHandler.kt
+++ b/samples/app/src/main/kotlin/com/bumble/appyx/app/node/backstack/app/indexedbackstack/transition/RecentsTransitionHandler.kt
@@ -1,6 +1,7 @@
 package com.bumble.appyx.app.node.backstack.app.indexedbackstack.transition
 
 import android.annotation.SuppressLint
+import android.os.Parcelable
 import androidx.compose.animation.core.Spring
 import androidx.compose.animation.core.Transition
 import androidx.compose.animation.core.animateFloat
@@ -28,7 +29,7 @@ import com.bumble.appyx.core.navigation.transition.TransitionDescriptor
 import com.bumble.appyx.core.navigation.transition.TransitionSpec
 import kotlin.math.roundToInt
 
-class RecentsTransitionHandler<NavTarget>(
+class RecentsTransitionHandler<NavTarget : Parcelable>(
     private val specFloat: TransitionSpec<State, Float> = { spring() },
     private val specOffset: TransitionSpec<State, Offset> = { spring() },
 ) : ModifierTransitionHandler<NavTarget, State>() {
@@ -170,7 +171,7 @@ class RecentsTransitionHandler<NavTarget>(
 }
 
 @Composable
-fun <R> rememberRecentsTransitionHandler(
+fun <R : Parcelable> rememberRecentsTransitionHandler(
     specFloat: TransitionSpec<State, Float> = { spring(stiffness = Spring.StiffnessMediumLow) },
     specOffset: TransitionSpec<State, Offset> = { spring(stiffness = Spring.StiffnessMediumLow) },
 ): ModifierTransitionHandler<R, State> =
diff --git a/samples/app/src/main/kotlin/com/bumble/appyx/app/node/samples/SamplesSelectorNode.kt b/samples/app/src/main/kotlin/com/bumble/appyx/app/node/samples/SamplesSelectorNode.kt
index 1870e1ad3d..8c4dc12c74 100644
--- a/samples/app/src/main/kotlin/com/bumble/appyx/app/node/samples/SamplesSelectorNode.kt
+++ b/samples/app/src/main/kotlin/com/bumble/appyx/app/node/samples/SamplesSelectorNode.kt
@@ -32,7 +32,7 @@ class SamplesSelectorNode(
     buildContext: BuildContext,
     private val outputFunc: (Output) -> Unit
 ) : ParentNode<SamplesSelectorNode.NavTarget>(
-    navModel = EmptyNavModel<NavTarget, Unit>(),
+    navModel = EmptyNavModel<NavTarget>(),
     buildContext = buildContext
 ) {
     sealed class NavTarget : Parcelable {
@@ -53,7 +53,7 @@ class SamplesSelectorNode(
         object OpenCardsExample : Output()
         object OpenOnboarding : Output()
         object OpenComposeNavigation : Output()
-        object OpenInsideTheBackStack: Output()
+        object OpenInsideTheBackStack : Output()
     }
 
     @ExperimentalUnitApi
diff --git a/samples/app/src/main/kotlin/com/bumble/appyx/app/node/teaser/backstack/transitionhandler/CustomBackStackTransitionHandler.kt b/samples/app/src/main/kotlin/com/bumble/appyx/app/node/teaser/backstack/transitionhandler/CustomBackStackTransitionHandler.kt
index 664b382ac3..3c40d139d8 100644
--- a/samples/app/src/main/kotlin/com/bumble/appyx/app/node/teaser/backstack/transitionhandler/CustomBackStackTransitionHandler.kt
+++ b/samples/app/src/main/kotlin/com/bumble/appyx/app/node/teaser/backstack/transitionhandler/CustomBackStackTransitionHandler.kt
@@ -1,6 +1,7 @@
 package com.bumble.appyx.app.node.teaser.backstack.transitionhandler
 
 import android.annotation.SuppressLint
+import android.os.Parcelable
 import androidx.compose.animation.core.Spring
 import androidx.compose.animation.core.Transition
 import androidx.compose.animation.core.animateFloat
@@ -21,7 +22,7 @@ import com.bumble.appyx.navmodel.backstack.BackStack
 import kotlin.math.roundToInt
 
 @Suppress("TransitionPropertiesLabel")
-class CustomBackStackTransitionHandler<T> : ModifierTransitionHandler<T, BackStack.State>() {
+class CustomBackStackTransitionHandler<T : Parcelable> : ModifierTransitionHandler<T, BackStack.State>() {
 
     @SuppressLint("ModifierFactoryExtensionFunction")
     override fun createModifier(
@@ -75,6 +76,6 @@ class CustomBackStackTransitionHandler<T> : ModifierTransitionHandler<T, BackSta
 }
 
 @Composable
-fun <T> rememberCustomHandler(): ModifierTransitionHandler<T, BackStack.State> = remember {
+fun <T : Parcelable> rememberCustomHandler(): ModifierTransitionHandler<T, BackStack.State> = remember {
     CustomBackStackTransitionHandler()
 }
diff --git a/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/cards/Cards.kt b/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/cards/Cards.kt
index 4d085875bf..cdc30df30d 100644
--- a/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/cards/Cards.kt
+++ b/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/cards/Cards.kt
@@ -14,7 +14,7 @@ import com.bumble.appyx.navmodel.cards.Cards.State.VoteLike
 import com.bumble.appyx.navmodel.cards.Cards.State.VotePass
 import kotlinx.parcelize.Parcelize
 
-class Cards<NavTarget : Any>(
+class Cards<NavTarget : Parcelable>(
     initialItems: List<NavTarget> = listOf(),
 ) : BaseNavModel<NavTarget, State>(
     screenResolver = CardsOnScreenResolver,
diff --git a/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/cards/operation/CardsOperation.kt b/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/cards/operation/CardsOperation.kt
index c2dedd84ca..840fc24d22 100644
--- a/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/cards/operation/CardsOperation.kt
+++ b/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/cards/operation/CardsOperation.kt
@@ -1,6 +1,7 @@
 package com.bumble.appyx.navmodel.cards.operation
 
+import android.os.Parcelable
 import com.bumble.appyx.core.navigation.Operation
 import com.bumble.appyx.navmodel.cards.Cards
 
-interface CardsOperation<T> : Operation<T, Cards.State>
+interface CardsOperation<T : Parcelable> : Operation<T, Cards.State>
diff --git a/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/cards/operation/IndicateLike.kt b/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/cards/operation/IndicateLike.kt
index b709e6a412..e1aa7f3de3 100644
--- a/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/cards/operation/IndicateLike.kt
+++ b/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/cards/operation/IndicateLike.kt
@@ -1,15 +1,16 @@
 package com.bumble.appyx.navmodel.cards.operation
 
+import android.os.Parcelable
 import com.bumble.appyx.navmodel.cards.Cards
 import com.bumble.appyx.navmodel.cards.Cards.Companion.TOP_STATES
 import com.bumble.appyx.navmodel.cards.CardsElements
 import kotlinx.parcelize.Parcelize
 
 @Parcelize
-class IndicateLike<T : Any> : TopCardOperation<T>(
+class IndicateLike<T : Parcelable> : TopCardOperation<T>(
     newTargetState = Cards.State.IndicateLike
 )
 
-fun <T : Any> Cards<T>.indicateLike() {
+fun <T : Parcelable> Cards<T>.indicateLike() {
     accept(IndicateLike())
 }
diff --git a/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/cards/operation/IndicatePass.kt b/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/cards/operation/IndicatePass.kt
index 569bfd138e..11f617f890 100644
--- a/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/cards/operation/IndicatePass.kt
+++ b/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/cards/operation/IndicatePass.kt
@@ -1,14 +1,15 @@
 package com.bumble.appyx.navmodel.cards.operation
 
+import android.os.Parcelable
 import com.bumble.appyx.navmodel.cards.Cards
 import com.bumble.appyx.navmodel.cards.Cards.State.IndicatePass
 import kotlinx.parcelize.Parcelize
 
 @Parcelize
-class IndicatePass<T : Any> : TopCardOperation<T>(
+class IndicatePass<T : Parcelable> : TopCardOperation<T>(
     newTargetState = IndicatePass
 )
 
-fun <T : Any> Cards<T>.indicatePass() {
+fun <T : Parcelable> Cards<T>.indicatePass() {
     accept(IndicatePass())
 }
diff --git a/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/cards/operation/PromoteAll.kt b/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/cards/operation/PromoteAll.kt
index d1a120f73b..efd315b656 100644
--- a/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/cards/operation/PromoteAll.kt
+++ b/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/cards/operation/PromoteAll.kt
@@ -1,19 +1,20 @@
 package com.bumble.appyx.navmodel.cards.operation
 
+import android.os.Parcelable
 import com.bumble.appyx.navmodel.cards.Cards
 import com.bumble.appyx.navmodel.cards.CardsElements
 import kotlinx.parcelize.Parcelize
 
 @Parcelize
-internal class PromoteAll<T : Any> : CardsOperation<T> {
+internal class PromoteAll<T : Parcelable> : CardsOperation<T> {
 
     override fun isApplicable(elements: CardsElements<T>): Boolean =
         true
 
-    override fun invoke(elements: CardsElements<T>, ): CardsElements<T> =
+    override fun invoke(elements: CardsElements<T>): CardsElements<T> =
         elements.transitionTo { it.targetState.next() }
 }
 
-internal fun <T : Any> Cards<T>.promoteAll() {
+internal fun <T : Parcelable> Cards<T>.promoteAll() {
     accept(PromoteAll())
 }
diff --git a/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/cards/operation/TopCardOperation.kt b/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/cards/operation/TopCardOperation.kt
index eafd7efa02..f26ada74f8 100644
--- a/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/cards/operation/TopCardOperation.kt
+++ b/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/cards/operation/TopCardOperation.kt
@@ -1,11 +1,12 @@
 package com.bumble.appyx.navmodel.cards.operation
 
+import android.os.Parcelable
 import com.bumble.appyx.navmodel.cards.Cards
 import com.bumble.appyx.navmodel.cards.CardsElements
 
-abstract class TopCardOperation<T : Any>(
+abstract class TopCardOperation<T : Parcelable>(
     private val newTargetState: Cards.State
-    ) : CardsOperation<T> {
+) : CardsOperation<T> {
 
     override fun isApplicable(elements: CardsElements<T>): Boolean =
         elements.any { it.targetState in Cards.TOP_STATES }
diff --git a/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/cards/operation/VoteLike.kt b/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/cards/operation/VoteLike.kt
index 8024475436..8a9c9c3ad9 100644
--- a/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/cards/operation/VoteLike.kt
+++ b/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/cards/operation/VoteLike.kt
@@ -1,14 +1,15 @@
 package com.bumble.appyx.navmodel.cards.operation
 
+import android.os.Parcelable
 import com.bumble.appyx.navmodel.cards.Cards
 import kotlinx.parcelize.Parcelize
 
 @Parcelize
-class VoteLike<T : Any> internal constructor() : TopCardOperation<T>(
+class VoteLike<T : Parcelable> internal constructor() : TopCardOperation<T>(
     newTargetState = Cards.State.VoteLike
 )
 
-fun <T : Any> Cards<T>.voteLike() {
+fun <T : Parcelable> Cards<T>.voteLike() {
     accept(VoteLike())
     promoteAll()
 }
diff --git a/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/cards/operation/VotePass.kt b/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/cards/operation/VotePass.kt
index d793fb0d77..708a6cc4d5 100644
--- a/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/cards/operation/VotePass.kt
+++ b/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/cards/operation/VotePass.kt
@@ -1,16 +1,17 @@
 package com.bumble.appyx.navmodel.cards.operation
 
+import android.os.Parcelable
 import com.bumble.appyx.navmodel.cards.Cards
 import com.bumble.appyx.navmodel.cards.Cards.Companion.FINAL_STATES
 import com.bumble.appyx.navmodel.cards.CardsElements
 import kotlinx.parcelize.Parcelize
 
 @Parcelize
-class VotePass<T : Any> internal constructor() : TopCardOperation<T>(
+class VotePass<T : Parcelable> internal constructor() : TopCardOperation<T>(
     newTargetState = Cards.State.VotePass
 )
 
-fun <T : Any> Cards<T>.votePass() {
+fun <T : Parcelable> Cards<T>.votePass() {
     accept(VotePass())
     promoteAll()
 }
diff --git a/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/cards/transitionhandler/CardsTransitionHandler.kt b/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/cards/transitionhandler/CardsTransitionHandler.kt
index 6dfc283f69..70b725554c 100644
--- a/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/cards/transitionhandler/CardsTransitionHandler.kt
+++ b/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/cards/transitionhandler/CardsTransitionHandler.kt
@@ -1,6 +1,7 @@
 package com.bumble.appyx.navmodel.cards.transitionhandler
 
 import android.annotation.SuppressLint
+import android.os.Parcelable
 import androidx.compose.animation.core.Spring
 import androidx.compose.animation.core.Transition
 import androidx.compose.animation.core.animateFloat
@@ -35,7 +36,7 @@ import kotlin.math.roundToInt
 import kotlin.math.sin
 
 @Suppress("TransitionPropertiesLabel", "MagicNumber")
-class CardsTransitionHandler<T>(
+class CardsTransitionHandler<T : Parcelable>(
     private val transitionSpec: TransitionSpec<Cards.State, Float> = { spring(stiffness = Spring.StiffnessVeryLow) }
 ) : ModifierTransitionHandler<T, Cards.State>(clipToBounds = true) {
 
@@ -154,7 +155,7 @@ class CardsTransitionHandler<T>(
     }
 
 @Composable
-fun <T> rememberCardsTransitionHandler(
+fun <T : Parcelable> rememberCardsTransitionHandler(
     transitionSpec: TransitionSpec<Cards.State, Float> = { spring(stiffness = Spring.StiffnessVeryLow) }
 ): ModifierTransitionHandler<T, Cards.State> = remember {
     CardsTransitionHandler(transitionSpec)
diff --git a/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/modal/Modal.kt b/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/modal/Modal.kt
index b8641aed9b..a6f9a28bb6 100644
--- a/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/modal/Modal.kt
+++ b/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/modal/Modal.kt
@@ -1,5 +1,6 @@
 package com.bumble.appyx.navmodel.modal
 
+import android.os.Parcelable
 import com.bumble.appyx.core.navigation.BaseNavModel
 import com.bumble.appyx.core.navigation.Operation.Noop
 import com.bumble.appyx.core.navigation.NavElements
@@ -13,8 +14,9 @@ import com.bumble.appyx.navmodel.modal.Modal.State
 import com.bumble.appyx.navmodel.modal.Modal.State.CREATED
 import com.bumble.appyx.navmodel.modal.Modal.State.DESTROYED
 import com.bumble.appyx.navmodel.modal.backpresshandler.RevertBackPressHandler
+import kotlinx.parcelize.Parcelize
 
-class Modal<NavTarget : Any>(
+class Modal<NavTarget : Parcelable>(
     initialElement: NavTarget,
     savedStateMap: SavedStateMap?,
     key: String = KEY_NAV_MODEL,
@@ -30,7 +32,8 @@ class Modal<NavTarget : Any>(
     finalState = DESTROYED
 ) {
 
-    enum class State {
+    @Parcelize
+    enum class State : Parcelable {
         CREATED, MODAL, FULL_SCREEN, DESTROYED
     }
 
diff --git a/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/modal/ModalTransitionHandler.kt b/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/modal/ModalTransitionHandler.kt
index 4a555f7916..a795ba5b08 100644
--- a/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/modal/ModalTransitionHandler.kt
+++ b/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/modal/ModalTransitionHandler.kt
@@ -1,6 +1,7 @@
 package com.bumble.appyx.navmodel.modal
 
 import android.annotation.SuppressLint
+import android.os.Parcelable
 import androidx.compose.animation.core.Transition
 import androidx.compose.animation.core.animateFloat
 import androidx.compose.animation.core.tween
@@ -21,7 +22,7 @@ import com.bumble.appyx.core.navigation.transition.TransitionSpec
 import com.bumble.appyx.navmodel.modal.Modal.State
 
 @Suppress("TransitionPropertiesLabel")
-class ModalTransitionHandler<T>(
+class ModalTransitionHandler<T : Parcelable>(
     private val transitionSpec: TransitionSpec<State, Float> = { tween(500) }
 ) : ModifierTransitionHandler<T, State>() {
 
diff --git a/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/modal/backpresshandler/RevertBackPressHandler.kt b/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/modal/backpresshandler/RevertBackPressHandler.kt
index a212613084..b985e21147 100644
--- a/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/modal/backpresshandler/RevertBackPressHandler.kt
+++ b/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/modal/backpresshandler/RevertBackPressHandler.kt
@@ -1,5 +1,6 @@
 package com.bumble.appyx.navmodel.modal.backpresshandler
 
+import android.os.Parcelable
 import com.bumble.appyx.core.navigation.backpresshandlerstrategies.BaseBackPressHandlerStrategy
 import com.bumble.appyx.navmodel.modal.Modal.State
 import com.bumble.appyx.navmodel.modal.Modal.State.FULL_SCREEN
@@ -8,7 +9,7 @@ import com.bumble.appyx.navmodel.modal.operation.Revert
 import kotlinx.coroutines.flow.Flow
 import kotlinx.coroutines.flow.map
 
-class RevertBackPressHandler<NavTarget : Any> :
+class RevertBackPressHandler<NavTarget : Parcelable> :
     BaseBackPressHandlerStrategy<NavTarget, State>() {
 
     override val canHandleBackPressFlow: Flow<Boolean> by lazy {
diff --git a/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/modal/operation/Add.kt b/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/modal/operation/Add.kt
index 6e1870a809..b6d5c730e9 100644
--- a/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/modal/operation/Add.kt
+++ b/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/modal/operation/Add.kt
@@ -1,5 +1,6 @@
 package com.bumble.appyx.navmodel.modal.operation
 
+import android.os.Parcelable
 import com.bumble.appyx.navmodel.modal.Modal
 import com.bumble.appyx.navmodel.modal.Modal.State.CREATED
 import com.bumble.appyx.navmodel.modal.ModalElement
@@ -9,8 +10,8 @@ import kotlinx.parcelize.Parcelize
 import kotlinx.parcelize.RawValue
 
 @Parcelize
-data class Add<T : Any>(
-    private val element: @RawValue T
+data class Add<T : Parcelable>(
+    private val element: T
 ) : ModalOperation<T> {
 
     override fun isApplicable(elements: ModalElements<T>) = true
@@ -25,6 +26,6 @@ data class Add<T : Any>(
     }
 }
 
-fun <T : Any> Modal<T>.add(element: T) {
+fun <T : Parcelable> Modal<T>.add(element: T) {
     accept(Add(element))
 }
diff --git a/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/modal/operation/Destroy.kt b/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/modal/operation/Destroy.kt
index e6d2d62c31..39a6d68187 100644
--- a/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/modal/operation/Destroy.kt
+++ b/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/modal/operation/Destroy.kt
@@ -1,5 +1,6 @@
 package com.bumble.appyx.navmodel.modal.operation
 
+import android.os.Parcelable
 import com.bumble.appyx.navmodel.modal.Modal
 import com.bumble.appyx.navmodel.modal.Modal.State.DESTROYED
 import com.bumble.appyx.navmodel.modal.ModalElements
@@ -7,7 +8,7 @@ import com.bumble.appyx.core.navigation.NavKey
 import kotlinx.parcelize.Parcelize
 
 @Parcelize
-data class Destroy<T : Any>(
+data class Destroy<T : Parcelable>(
     private val key: NavKey<T>
 ) : ModalOperation<T> {
 
@@ -27,6 +28,6 @@ data class Destroy<T : Any>(
     }
 }
 
-fun <T : Any> Modal<T>.destroy(key: NavKey<T>) {
+fun <T : Parcelable> Modal<T>.destroy(key: NavKey<T>) {
     accept(Destroy(key))
 }
diff --git a/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/modal/operation/Dismiss.kt b/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/modal/operation/Dismiss.kt
index a627a178bd..faa90d2dc3 100644
--- a/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/modal/operation/Dismiss.kt
+++ b/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/modal/operation/Dismiss.kt
@@ -1,5 +1,6 @@
 package com.bumble.appyx.navmodel.modal.operation
 
+import android.os.Parcelable
 import com.bumble.appyx.navmodel.modal.Modal
 import com.bumble.appyx.navmodel.modal.Modal.State.CREATED
 import com.bumble.appyx.navmodel.modal.ModalElements
@@ -7,7 +8,7 @@ import com.bumble.appyx.core.navigation.NavKey
 import kotlinx.parcelize.Parcelize
 
 @Parcelize
-data class Dismiss<T : Any>(
+data class Dismiss<T : Parcelable>(
     private val key: NavKey<T>
 ) : ModalOperation<T> {
 
@@ -27,6 +28,6 @@ data class Dismiss<T : Any>(
     }
 }
 
-fun <T : Any> Modal<T>.dismiss(key: NavKey<T>) {
+fun <T : Parcelable> Modal<T>.dismiss(key: NavKey<T>) {
     accept(Dismiss(key))
 }
diff --git a/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/modal/operation/FullScreen.kt b/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/modal/operation/FullScreen.kt
index 1eeecc0137..f12d0dbff3 100644
--- a/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/modal/operation/FullScreen.kt
+++ b/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/modal/operation/FullScreen.kt
@@ -1,5 +1,6 @@
 package com.bumble.appyx.navmodel.modal.operation
 
+import android.os.Parcelable
 import com.bumble.appyx.navmodel.modal.Modal
 import com.bumble.appyx.navmodel.modal.Modal.State.FULL_SCREEN
 import com.bumble.appyx.navmodel.modal.ModalElements
@@ -7,7 +8,7 @@ import com.bumble.appyx.core.navigation.NavKey
 import kotlinx.parcelize.Parcelize
 
 @Parcelize
-data class FullScreen<T : Any>(
+data class FullScreen<T : Parcelable>(
     private val key: NavKey<T>
 ) : ModalOperation<T> {
 
@@ -27,6 +28,6 @@ data class FullScreen<T : Any>(
     }
 }
 
-fun <T : Any> Modal<T>.fullScreen(key: NavKey<T>) {
+fun <T : Parcelable> Modal<T>.fullScreen(key: NavKey<T>) {
     accept(FullScreen(key))
 }
diff --git a/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/modal/operation/ModalOperation.kt b/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/modal/operation/ModalOperation.kt
index 789bd03ca9..352a51c47f 100644
--- a/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/modal/operation/ModalOperation.kt
+++ b/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/modal/operation/ModalOperation.kt
@@ -1,6 +1,7 @@
 package com.bumble.appyx.navmodel.modal.operation
 
+import android.os.Parcelable
 import com.bumble.appyx.navmodel.modal.Modal.State
 import com.bumble.appyx.core.navigation.Operation
 
-interface ModalOperation<T> : Operation<T, State>
+interface ModalOperation<T : Parcelable> : Operation<T, State>
diff --git a/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/modal/operation/Revert.kt b/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/modal/operation/Revert.kt
index 678d078c1a..80b1aac4a0 100644
--- a/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/modal/operation/Revert.kt
+++ b/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/modal/operation/Revert.kt
@@ -1,5 +1,6 @@
 package com.bumble.appyx.navmodel.modal.operation
 
+import android.os.Parcelable
 import com.bumble.appyx.navmodel.modal.Modal
 import com.bumble.appyx.navmodel.modal.Modal.State.FULL_SCREEN
 import com.bumble.appyx.navmodel.modal.Modal.State.MODAL
@@ -7,7 +8,7 @@ import com.bumble.appyx.navmodel.modal.ModalElements
 import kotlinx.parcelize.Parcelize
 
 @Parcelize
-class Revert<T : Any> : ModalOperation<T> {
+class Revert<T : Parcelable> : ModalOperation<T> {
 
     override fun isApplicable(elements: ModalElements<T>): Boolean =
         true
@@ -35,6 +36,6 @@ class Revert<T : Any> : ModalOperation<T> {
     }
 }
 
-fun <T : Any> Modal<T>.revert() {
+fun <T : Parcelable> Modal<T>.revert() {
     accept(Revert())
 }
diff --git a/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/modal/operation/Show.kt b/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/modal/operation/Show.kt
index e3c9c3f84c..2e4ae82b49 100644
--- a/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/modal/operation/Show.kt
+++ b/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/modal/operation/Show.kt
@@ -1,5 +1,6 @@
 package com.bumble.appyx.navmodel.modal.operation
 
+import android.os.Parcelable
 import com.bumble.appyx.navmodel.modal.Modal
 import com.bumble.appyx.navmodel.modal.Modal.State.MODAL
 import com.bumble.appyx.navmodel.modal.ModalElements
@@ -7,7 +8,7 @@ import com.bumble.appyx.core.navigation.NavKey
 import kotlinx.parcelize.Parcelize
 
 @Parcelize
-data class Show<T : Any>(
+data class Show<T : Parcelable>(
     private val key: NavKey<T>
 ) : ModalOperation<T> {
 
@@ -27,6 +28,6 @@ data class Show<T : Any>(
     }
 }
 
-fun <T : Any> Modal<T>.show(key: NavKey<T>) {
+fun <T : Parcelable> Modal<T>.show(key: NavKey<T>) {
     accept(Show(key))
 }
diff --git a/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/promoter/navmodel/Promoter.kt b/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/promoter/navmodel/Promoter.kt
index 9ac073ea76..ab42ba4754 100644
--- a/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/promoter/navmodel/Promoter.kt
+++ b/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/promoter/navmodel/Promoter.kt
@@ -1,5 +1,6 @@
 package com.bumble.appyx.navmodel.promoter.navmodel
 
+import android.os.Parcelable
 import com.bumble.appyx.navmodel.promoter.navmodel.Promoter.State
 import com.bumble.appyx.navmodel.promoter.navmodel.Promoter.State.CREATED
 import com.bumble.appyx.navmodel.promoter.navmodel.Promoter.State.DESTROYED
@@ -7,8 +8,9 @@ import com.bumble.appyx.navmodel.promoter.navmodel.Promoter.State.STAGE1
 import com.bumble.appyx.core.navigation.BaseNavModel
 import com.bumble.appyx.core.navigation.Operation.Noop
 import com.bumble.appyx.core.navigation.NavKey
+import kotlinx.parcelize.Parcelize
 
-class Promoter<T : Any>(
+class Promoter<T : Parcelable>(
     initialItems: List<T> = listOf(),
 ) : BaseNavModel<T, State>(
     screenResolver = PromoterOnScreenResolver,
@@ -16,7 +18,8 @@ class Promoter<T : Any>(
     savedStateMap = null
 ) {
 
-    enum class State {
+    @Parcelize
+    enum class State : Parcelable {
         CREATED, STAGE1, STAGE2, STAGE3, STAGE4, SELECTED, DESTROYED;
 
         fun next(): State =
diff --git a/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/promoter/navmodel/operation/AddFirst.kt b/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/promoter/navmodel/operation/AddFirst.kt
index 21480ed43f..2db948d379 100644
--- a/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/promoter/navmodel/operation/AddFirst.kt
+++ b/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/promoter/navmodel/operation/AddFirst.kt
@@ -1,5 +1,6 @@
 package com.bumble.appyx.navmodel.promoter.navmodel.operation
 
+import android.os.Parcelable
 import com.bumble.appyx.navmodel.promoter.navmodel.Promoter
 import com.bumble.appyx.navmodel.promoter.navmodel.Promoter.State.CREATED
 import com.bumble.appyx.navmodel.promoter.navmodel.PromoterElement
@@ -10,8 +11,8 @@ import kotlinx.parcelize.Parcelize
 import kotlinx.parcelize.RawValue
 
 @Parcelize
-data class AddFirst<T : Any>(
-    private val element: @RawValue T
+data class AddFirst<T : Parcelable>(
+    private val element: T
 ) : PromoterOperation<T> {
 
     override fun isApplicable(elements: PromoterElements<T>): Boolean =
@@ -31,6 +32,6 @@ data class AddFirst<T : Any>(
     }
 }
 
-fun <T : Any> Promoter<T>.addFirst(element: T) {
+fun <T : Parcelable> Promoter<T>.addFirst(element: T) {
     accept(AddFirst(element))
 }
diff --git a/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/promoter/navmodel/operation/PromoteAll.kt b/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/promoter/navmodel/operation/PromoteAll.kt
index ae0cddf4e0..4c1c380813 100644
--- a/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/promoter/navmodel/operation/PromoteAll.kt
+++ b/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/promoter/navmodel/operation/PromoteAll.kt
@@ -1,12 +1,13 @@
 package com.bumble.appyx.navmodel.promoter.navmodel.operation
 
+import android.os.Parcelable
 import com.bumble.appyx.navmodel.promoter.navmodel.Promoter
 import com.bumble.appyx.navmodel.promoter.navmodel.PromoterElements
 import com.bumble.appyx.core.navigation.NavElements
 import kotlinx.parcelize.Parcelize
 
 @Parcelize
-class PromoteAll<T : Any> : PromoterOperation<T> {
+class PromoteAll<T : Parcelable> : PromoterOperation<T> {
 
     override fun isApplicable(elements: PromoterElements<T>): Boolean =
         true
@@ -17,6 +18,6 @@ class PromoteAll<T : Any> : PromoterOperation<T> {
         elements.transitionTo { it.targetState.next() }
 }
 
-fun <T : Any> Promoter<T>.promoteAll() {
+fun <T : Parcelable> Promoter<T>.promoteAll() {
     accept(PromoteAll())
 }
diff --git a/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/promoter/navmodel/operation/PromoterOperation.kt b/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/promoter/navmodel/operation/PromoterOperation.kt
index f21c368b21..85682e6519 100644
--- a/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/promoter/navmodel/operation/PromoterOperation.kt
+++ b/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/promoter/navmodel/operation/PromoterOperation.kt
@@ -1,6 +1,7 @@
 package com.bumble.appyx.navmodel.promoter.navmodel.operation
 
+import android.os.Parcelable
 import com.bumble.appyx.core.navigation.Operation
 import com.bumble.appyx.navmodel.promoter.navmodel.Promoter
 
-interface PromoterOperation<T> : Operation<T, Promoter.State>
+interface PromoterOperation<T : Parcelable> : Operation<T, Promoter.State>
diff --git a/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/promoter/transitionhandler/PromoterTransitionHandler.kt b/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/promoter/transitionhandler/PromoterTransitionHandler.kt
index 3952de6514..4b841c027a 100644
--- a/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/promoter/transitionhandler/PromoterTransitionHandler.kt
+++ b/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/promoter/transitionhandler/PromoterTransitionHandler.kt
@@ -1,6 +1,7 @@
 package com.bumble.appyx.navmodel.promoter.transitionhandler
 
 import android.annotation.SuppressLint
+import android.os.Parcelable
 import androidx.compose.animation.core.Transition
 import androidx.compose.animation.core.animateFloat
 import androidx.compose.animation.core.tween
@@ -28,7 +29,7 @@ import kotlin.math.roundToInt
 import kotlin.math.sin
 
 @Suppress("TransitionPropertiesLabel")
-class PromoterTransitionHandler<T>(
+class PromoterTransitionHandler<T : Parcelable>(
     private val childSize: Dp,
     private val transitionSpec: TransitionSpec<Promoter.State, Float> = { tween(500) }
 ) : ModifierTransitionHandler<T, Promoter.State>() {
@@ -160,7 +161,7 @@ class PromoterTransitionHandler<T>(
 }
 
 @Composable
-fun <T> rememberPromoterTransitionHandler(
+fun <T : Parcelable> rememberPromoterTransitionHandler(
     childSize: Dp,
     transitionSpec: TransitionSpec<Promoter.State, Float> = { tween(500) }
 ): ModifierTransitionHandler<T, Promoter.State> = remember {
diff --git a/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/spotlightadvanced/SpotlightAdvanced.kt b/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/spotlightadvanced/SpotlightAdvanced.kt
index c55caf23bf..a44bd22894 100644
--- a/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/spotlightadvanced/SpotlightAdvanced.kt
+++ b/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/spotlightadvanced/SpotlightAdvanced.kt
@@ -12,7 +12,7 @@ import com.bumble.appyx.navmodel.spotlightadvanced.backpresshandler.GoToDefault
 import com.bumble.appyx.navmodel.spotlightadvanced.operation.toSpotlightAdvancedElements
 import kotlinx.parcelize.Parcelize
 
-class SpotlightAdvanced<NavTarget : Any>(
+class SpotlightAdvanced<NavTarget : Parcelable>(
     items: List<NavTarget>,
     initialActiveIndex: Int = 0,
     savedStateMap: SavedStateMap?,
diff --git a/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/spotlightadvanced/SpotlightAdvancedElementExt.kt b/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/spotlightadvanced/SpotlightAdvancedElementExt.kt
index 33883ca108..80103c2ec0 100644
--- a/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/spotlightadvanced/SpotlightAdvancedElementExt.kt
+++ b/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/spotlightadvanced/SpotlightAdvancedElementExt.kt
@@ -1,9 +1,10 @@
 package com.bumble.appyx.navmodel.spotlightadvanced
 
+import android.os.Parcelable
 import com.bumble.appyx.navmodel.spotlightadvanced.SpotlightAdvanced.State.Active
 
-val <T> SpotlightAdvancedElements<T>.current: SpotlightAdvancedElement<T>?
+val <T : Parcelable> SpotlightAdvancedElements<T>.current: SpotlightAdvancedElement<T>?
     get() = this.lastOrNull { it.targetState == Active }
 
-val <T> SpotlightAdvancedElements<T>.currentIndex: Int
+val <T : Parcelable> SpotlightAdvancedElements<T>.currentIndex: Int
     get() = this.indexOfLast { it.targetState == Active }
diff --git a/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/spotlightadvanced/SpotlightAdvancedExt.kt b/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/spotlightadvanced/SpotlightAdvancedExt.kt
index 3615a7e69f..0c6e33ad16 100644
--- a/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/spotlightadvanced/SpotlightAdvancedExt.kt
+++ b/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/spotlightadvanced/SpotlightAdvancedExt.kt
@@ -1,19 +1,20 @@
 package com.bumble.appyx.navmodel.spotlightadvanced
 
+import android.os.Parcelable
 import kotlinx.coroutines.flow.Flow
 import kotlinx.coroutines.flow.map
 
-fun <T : Any> SpotlightAdvanced<T>.hasNext() =
+fun <T : Parcelable> SpotlightAdvanced<T>.hasNext() =
     elements.map { value -> value.lastIndex != elements.value.currentIndex }
 
-fun <T : Any> SpotlightAdvanced<T>.hasPrevious() =
+fun <T : Parcelable> SpotlightAdvanced<T>.hasPrevious() =
     elements.map { value -> value.currentIndex != 0 }
 
-fun <T : Any> SpotlightAdvanced<T>.activeIndex() =
+fun <T : Parcelable> SpotlightAdvanced<T>.activeIndex() =
     elements.map { value -> value.currentIndex }
 
-fun <T : Any> SpotlightAdvanced<T>.elementsCount() =
+fun <T : Parcelable> SpotlightAdvanced<T>.elementsCount() =
     elements.value.size
 
-fun <T : Any> SpotlightAdvanced<T>.isCarousel(): Flow<Boolean> =
+fun <T : Parcelable> SpotlightAdvanced<T>.isCarousel(): Flow<Boolean> =
     elements.map { it.any { it.targetState is SpotlightAdvanced.State.Carousel } }
diff --git a/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/spotlightadvanced/backpresshandler/GoToDefault.kt b/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/spotlightadvanced/backpresshandler/GoToDefault.kt
index d8a74db8c7..9acb4a0fff 100644
--- a/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/spotlightadvanced/backpresshandler/GoToDefault.kt
+++ b/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/spotlightadvanced/backpresshandler/GoToDefault.kt
@@ -1,5 +1,6 @@
 package com.bumble.appyx.navmodel.spotlightadvanced.backpresshandler
 
+import android.os.Parcelable
 import com.bumble.appyx.core.navigation.backpresshandlerstrategies.BaseBackPressHandlerStrategy
 import com.bumble.appyx.navmodel.spotlightadvanced.SpotlightAdvanced
 import com.bumble.appyx.navmodel.spotlightadvanced.SpotlightAdvanced.State.Active
@@ -8,7 +9,7 @@ import com.bumble.appyx.navmodel.spotlightadvanced.operation.Activate
 import kotlinx.coroutines.flow.Flow
 import kotlinx.coroutines.flow.map
 
-class GoToDefault<NavTarget : Any>(
+class GoToDefault<NavTarget : Parcelable>(
     private val defaultElementIndex: Int = 0
 ) : BaseBackPressHandlerStrategy<NavTarget, SpotlightAdvanced.State>() {
 
diff --git a/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/spotlightadvanced/backpresshandler/GoToPrevious.kt b/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/spotlightadvanced/backpresshandler/GoToPrevious.kt
index 5c1f568758..e58deb1e7e 100644
--- a/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/spotlightadvanced/backpresshandler/GoToPrevious.kt
+++ b/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/spotlightadvanced/backpresshandler/GoToPrevious.kt
@@ -1,5 +1,6 @@
 package com.bumble.appyx.navmodel.spotlightadvanced.backpresshandler
 
+import android.os.Parcelable
 import com.bumble.appyx.core.navigation.backpresshandlerstrategies.BaseBackPressHandlerStrategy
 import com.bumble.appyx.navmodel.spotlightadvanced.SpotlightAdvanced
 import com.bumble.appyx.navmodel.spotlightadvanced.SpotlightAdvancedElements
@@ -7,7 +8,7 @@ import com.bumble.appyx.navmodel.spotlightadvanced.operation.Previous
 import kotlinx.coroutines.flow.Flow
 import kotlinx.coroutines.flow.map
 
-class GoToPrevious<NavTarget : Any> :
+class GoToPrevious<NavTarget : Parcelable> :
     BaseBackPressHandlerStrategy<NavTarget, SpotlightAdvanced.State>() {
 
     override val canHandleBackPressFlow: Flow<Boolean> by lazy {
diff --git a/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/spotlightadvanced/backpresshandler/UndoHistory.kt b/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/spotlightadvanced/backpresshandler/UndoHistory.kt
index a6445a3ef3..68235075cf 100644
--- a/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/spotlightadvanced/backpresshandler/UndoHistory.kt
+++ b/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/spotlightadvanced/backpresshandler/UndoHistory.kt
@@ -1,5 +1,6 @@
 package com.bumble.appyx.navmodel.spotlightadvanced.backpresshandler
 
+import android.os.Parcelable
 import com.bumble.appyx.core.navigation.backpresshandlerstrategies.BaseBackPressHandlerStrategy
 import com.bumble.appyx.navmodel.spotlightadvanced.SpotlightAdvanced
 import com.bumble.appyx.navmodel.spotlightadvanced.SpotlightAdvanced.State.Active
@@ -8,7 +9,7 @@ import com.bumble.appyx.navmodel.spotlightadvanced.operation.Activate
 import kotlinx.coroutines.flow.Flow
 import kotlinx.coroutines.flow.map
 
-class UndoHistory<NavTarget : Any>(
+class UndoHistory<NavTarget : Parcelable>(
     private val historyLimit: Int = 10
 ) : BaseBackPressHandlerStrategy<NavTarget, SpotlightAdvanced.State>() {
 
diff --git a/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/spotlightadvanced/operation/Activate.kt b/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/spotlightadvanced/operation/Activate.kt
index e092449dd7..2b9b9223c8 100644
--- a/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/spotlightadvanced/operation/Activate.kt
+++ b/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/spotlightadvanced/operation/Activate.kt
@@ -1,5 +1,6 @@
 package com.bumble.appyx.navmodel.spotlightadvanced.operation
 
+import android.os.Parcelable
 import com.bumble.appyx.core.navigation.NavElements
 import com.bumble.appyx.navmodel.spotlightadvanced.SpotlightAdvanced
 import com.bumble.appyx.navmodel.spotlightadvanced.SpotlightAdvanced.State
@@ -7,7 +8,7 @@ import com.bumble.appyx.navmodel.spotlightadvanced.currentIndex
 import kotlinx.parcelize.Parcelize
 
 @Parcelize
-class Activate<T : Any>(
+class Activate<T : Parcelable>(
     private val index: Int
 ) : SpotlightAdvancedOperation<T> {
 
@@ -42,6 +43,6 @@ class Activate<T : Any>(
     }
 }
 
-fun <T : Any> SpotlightAdvanced<T>.activate(index: Int) {
+fun <T : Parcelable> SpotlightAdvanced<T>.activate(index: Int) {
     accept(Activate(index))
 }
diff --git a/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/spotlightadvanced/operation/Next.kt b/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/spotlightadvanced/operation/Next.kt
index ec00d13416..93f45c182e 100644
--- a/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/spotlightadvanced/operation/Next.kt
+++ b/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/spotlightadvanced/operation/Next.kt
@@ -1,5 +1,6 @@
 package com.bumble.appyx.navmodel.spotlightadvanced.operation
 
+import android.os.Parcelable
 import com.bumble.appyx.core.navigation.NavElements
 import com.bumble.appyx.navmodel.spotlightadvanced.SpotlightAdvanced
 import com.bumble.appyx.navmodel.spotlightadvanced.SpotlightAdvanced.State
@@ -10,7 +11,7 @@ import com.bumble.appyx.navmodel.spotlightadvanced.SpotlightAdvanced.State.Inact
 import kotlinx.parcelize.Parcelize
 
 @Parcelize
-class Next<T : Any> : SpotlightAdvancedOperation<T> {
+class Next<T : Parcelable> : SpotlightAdvancedOperation<T> {
 
     override fun isApplicable(elements: NavElements<T, State>) =
         elements.any { (it.fromState == InactiveAfter && it.targetState == InactiveAfter) || it.fromState is Carousel }
@@ -61,7 +62,7 @@ class Next<T : Any> : SpotlightAdvancedOperation<T> {
     }
 }
 
-fun <T : Any> SpotlightAdvanced<T>.next() {
+fun <T : Parcelable> SpotlightAdvanced<T>.next() {
     accept(Next())
 }
 
diff --git a/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/spotlightadvanced/operation/Previous.kt b/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/spotlightadvanced/operation/Previous.kt
index b6c73aacc6..7396af311d 100644
--- a/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/spotlightadvanced/operation/Previous.kt
+++ b/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/spotlightadvanced/operation/Previous.kt
@@ -1,5 +1,6 @@
 package com.bumble.appyx.navmodel.spotlightadvanced.operation
 
+import android.os.Parcelable
 import com.bumble.appyx.core.navigation.NavElements
 import com.bumble.appyx.navmodel.spotlightadvanced.SpotlightAdvanced
 import com.bumble.appyx.navmodel.spotlightadvanced.SpotlightAdvanced.State
@@ -11,7 +12,7 @@ import kotlinx.parcelize.Parcelize
 
 
 @Parcelize
-class Previous<T : Any> : SpotlightAdvancedOperation<T> {
+class Previous<T : Parcelable> : SpotlightAdvancedOperation<T> {
 
     override fun isApplicable(elements: NavElements<T, State>) =
         elements.any {
@@ -72,6 +73,6 @@ class Previous<T : Any> : SpotlightAdvancedOperation<T> {
     }
 }
 
-fun <T : Any> SpotlightAdvanced<T>.previous() {
+fun <T : Parcelable> SpotlightAdvanced<T>.previous() {
     accept(Previous())
 }
diff --git a/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/spotlightadvanced/operation/SwitchToCarousel.kt b/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/spotlightadvanced/operation/SwitchToCarousel.kt
index b506f63f9c..0e5cc8006a 100644
--- a/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/spotlightadvanced/operation/SwitchToCarousel.kt
+++ b/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/spotlightadvanced/operation/SwitchToCarousel.kt
@@ -1,12 +1,13 @@
 package com.bumble.appyx.navmodel.spotlightadvanced.operation
 
+import android.os.Parcelable
 import com.bumble.appyx.core.navigation.NavElements
 import com.bumble.appyx.navmodel.spotlightadvanced.SpotlightAdvanced
 import com.bumble.appyx.navmodel.spotlightadvanced.SpotlightAdvanced.State
 import kotlinx.parcelize.Parcelize
 
 @Parcelize
-class SwitchToCarousel<T : Any>: SpotlightAdvancedOperation<T> {
+class SwitchToCarousel<T : Parcelable> : SpotlightAdvancedOperation<T> {
 
     override fun isApplicable(elements: NavElements<T, State>) =
         elements.all { it.fromState !is State.Carousel }
@@ -26,6 +27,6 @@ class SwitchToCarousel<T : Any>: SpotlightAdvancedOperation<T> {
     }
 }
 
-fun <T : Any> SpotlightAdvanced<T>.switchToCarousel() {
+fun <T : Parcelable> SpotlightAdvanced<T>.switchToCarousel() {
     accept(SwitchToCarousel())
 }
diff --git a/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/spotlightadvanced/operation/SwitchToPager.kt b/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/spotlightadvanced/operation/SwitchToPager.kt
index 68483d1645..bc6bb41ae9 100644
--- a/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/spotlightadvanced/operation/SwitchToPager.kt
+++ b/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/spotlightadvanced/operation/SwitchToPager.kt
@@ -1,12 +1,13 @@
 package com.bumble.appyx.navmodel.spotlightadvanced.operation
 
+import android.os.Parcelable
 import com.bumble.appyx.core.navigation.NavElements
 import com.bumble.appyx.navmodel.spotlightadvanced.SpotlightAdvanced
 import com.bumble.appyx.navmodel.spotlightadvanced.SpotlightAdvanced.State
 import kotlinx.parcelize.Parcelize
 
 @Parcelize
-class SwitchToPager<T : Any> : SpotlightAdvancedOperation<T> {
+class SwitchToPager<T : Parcelable> : SpotlightAdvancedOperation<T> {
 
     override fun isApplicable(elements: NavElements<T, State>) =
         elements.all { it.fromState is State.Carousel }
@@ -36,6 +37,6 @@ class SwitchToPager<T : Any> : SpotlightAdvancedOperation<T> {
 }
 
 
-fun <T : Any> SpotlightAdvanced<T>.switchToPager() {
+fun <T : Parcelable> SpotlightAdvanced<T>.switchToPager() {
     accept(SwitchToPager())
 }
diff --git a/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/spotlightadvanced/operation/UpdateElements.kt b/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/spotlightadvanced/operation/UpdateElements.kt
index cf56430b99..1acb566431 100644
--- a/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/spotlightadvanced/operation/UpdateElements.kt
+++ b/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/spotlightadvanced/operation/UpdateElements.kt
@@ -1,5 +1,6 @@
 package com.bumble.appyx.navmodel.spotlightadvanced.operation
 
+import android.os.Parcelable
 import com.bumble.appyx.core.navigation.NavElements
 import com.bumble.appyx.core.navigation.NavKey
 import com.bumble.appyx.core.navigation.Operation
@@ -14,8 +15,8 @@ import kotlinx.parcelize.Parcelize
 import kotlinx.parcelize.RawValue
 
 @Parcelize
-class UpdateElements<T : Any>(
-    private val elements: @RawValue List<T>,
+class UpdateElements<T : Parcelable>(
+    private val elements: List<T>,
     private val initialActiveIndex: Int? = null,
 ) : SpotlightAdvancedOperation<T> {
 
@@ -46,14 +47,14 @@ class UpdateElements<T : Any>(
     }
 }
 
-fun <T : Any> SpotlightAdvanced<T>.updateElements(
+fun <T : Parcelable> SpotlightAdvanced<T>.updateElements(
     items: List<T>,
     initialActiveItem: Int? = null
 ) {
     accept(UpdateElements(items, initialActiveItem))
 }
 
-internal fun <T> List<T>.toSpotlightAdvancedElements(activeIndex: Int): SpotlightAdvancedElements<T> =
+internal fun <T : Parcelable> List<T>.toSpotlightAdvancedElements(activeIndex: Int): SpotlightAdvancedElements<T> =
     mapIndexed { index, item ->
         val state = when {
             index < activeIndex -> InactiveBefore
diff --git a/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/spotlightadvanced/transitionhandler/SpotlightAdvancedSlider.kt b/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/spotlightadvanced/transitionhandler/SpotlightAdvancedSlider.kt
index 11d6c76ccd..6f4e585724 100644
--- a/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/spotlightadvanced/transitionhandler/SpotlightAdvancedSlider.kt
+++ b/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/spotlightadvanced/transitionhandler/SpotlightAdvancedSlider.kt
@@ -1,5 +1,6 @@
 package com.bumble.appyx.navmodel.spotlightadvanced.transitionhandler
 
+import android.os.Parcelable
 import androidx.compose.animation.core.Spring
 import androidx.compose.animation.core.Transition
 import androidx.compose.animation.core.animateFloat
@@ -33,7 +34,7 @@ import kotlin.math.roundToInt
 import kotlin.math.sin
 
 @Suppress("TransitionPropertiesLabel")
-class SpotlightAdvancedSlider<T>(
+class SpotlightAdvancedSlider<T : Parcelable>(
     private val transitionSpec: TransitionSpec<SpotlightAdvanced.State, Offset> = {
         spring(stiffness = Spring.StiffnessLow)
     }
@@ -140,7 +141,7 @@ class SpotlightAdvancedSlider<T>(
 }
 
 @Composable
-fun <T> rememberSpotlightAdvancedSlider(
+fun <T : Parcelable> rememberSpotlightAdvancedSlider(
     transitionSpec: TransitionSpec<SpotlightAdvanced.State, Offset> = { spring(stiffness = Spring.StiffnessLow) }
 ): ModifierTransitionHandler<T, SpotlightAdvanced.State> = remember {
     SpotlightAdvancedSlider(
diff --git a/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/tiles/Tiles.kt b/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/tiles/Tiles.kt
index ea3943579f..ffa6e829f2 100644
--- a/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/tiles/Tiles.kt
+++ b/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/tiles/Tiles.kt
@@ -1,5 +1,6 @@
 package com.bumble.appyx.navmodel.tiles
 
+import android.os.Parcelable
 import com.bumble.appyx.core.navigation.BaseNavModel
 import com.bumble.appyx.core.navigation.Operation.Noop
 import com.bumble.appyx.core.navigation.NavKey
@@ -8,8 +9,9 @@ import com.bumble.appyx.navmodel.tiles.backPressHandler.DeselectAllTiles
 import com.bumble.appyx.navmodel.tiles.Tiles.State
 import com.bumble.appyx.navmodel.tiles.Tiles.State.CREATED
 import com.bumble.appyx.navmodel.tiles.Tiles.State.STANDARD
+import kotlinx.parcelize.Parcelize
 
-class Tiles<T : Any>(
+class Tiles<T : Parcelable>(
     initialItems: List<T>,
     backPressHandler: BackPressHandlerStrategy<T, State> = DeselectAllTiles()
 ) : BaseNavModel<T, State>(
@@ -19,7 +21,8 @@ class Tiles<T : Any>(
     savedStateMap = null,
 ) {
 
-    enum class State {
+    @Parcelize
+    enum class State : Parcelable {
         CREATED, STANDARD, SELECTED, DESTROYED
     }
 
diff --git a/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/tiles/backPressHandler/DeselectAllTiles.kt b/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/tiles/backPressHandler/DeselectAllTiles.kt
index 7c75b7d554..4d9092c050 100644
--- a/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/tiles/backPressHandler/DeselectAllTiles.kt
+++ b/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/tiles/backPressHandler/DeselectAllTiles.kt
@@ -1,5 +1,6 @@
 package com.bumble.appyx.navmodel.tiles.backPressHandler
 
+import android.os.Parcelable
 import com.bumble.appyx.core.navigation.backpresshandlerstrategies.BaseBackPressHandlerStrategy
 import com.bumble.appyx.navmodel.tiles.Tiles
 import com.bumble.appyx.navmodel.tiles.TilesElements
@@ -7,7 +8,7 @@ import com.bumble.appyx.navmodel.tiles.operation.DeselectAll
 import kotlinx.coroutines.flow.Flow
 import kotlinx.coroutines.flow.map
 
-class DeselectAllTiles<NavTarget : Any> :
+class DeselectAllTiles<NavTarget : Parcelable> :
     BaseBackPressHandlerStrategy<NavTarget, Tiles.State>() {
 
     override val canHandleBackPressFlow: Flow<Boolean> by lazy {
diff --git a/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/tiles/operation/Add.kt b/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/tiles/operation/Add.kt
index b541df28ae..f1618066b0 100644
--- a/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/tiles/operation/Add.kt
+++ b/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/tiles/operation/Add.kt
@@ -1,5 +1,6 @@
 package com.bumble.appyx.navmodel.tiles.operation
 
+import android.os.Parcelable
 import com.bumble.appyx.core.navigation.NavElements
 import com.bumble.appyx.core.navigation.NavKey
 import com.bumble.appyx.navmodel.tiles.Tiles
@@ -11,8 +12,8 @@ import kotlinx.parcelize.Parcelize
 import kotlinx.parcelize.RawValue
 
 @Parcelize
-data class Add<T : Any>(
-    private val element: @RawValue T
+data class Add<T : Parcelable>(
+    private val element: T
 ) : TilesOperation<T> {
 
     override fun isApplicable(elements: TilesElements<T>): Boolean = true
@@ -28,6 +29,6 @@ data class Add<T : Any>(
         )
 }
 
-fun <T : Any> Tiles<T>.add(element: T) {
+fun <T : Parcelable> Tiles<T>.add(element: T) {
     accept(Add(element))
 }
diff --git a/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/tiles/operation/Deselect.kt b/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/tiles/operation/Deselect.kt
index 5da20d196e..17f95b9295 100644
--- a/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/tiles/operation/Deselect.kt
+++ b/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/tiles/operation/Deselect.kt
@@ -1,5 +1,6 @@
 package com.bumble.appyx.navmodel.tiles.operation
 
+import android.os.Parcelable
 import com.bumble.appyx.core.navigation.NavElements
 import com.bumble.appyx.core.navigation.NavKey
 import com.bumble.appyx.navmodel.tiles.Tiles
@@ -9,7 +10,7 @@ import com.bumble.appyx.navmodel.tiles.TilesElements
 import kotlinx.parcelize.Parcelize
 
 @Parcelize
-data class Deselect<T : Any>(
+data class Deselect<T : Parcelable>(
     private val key: NavKey<T>
 ) : TilesOperation<T> {
 
@@ -23,6 +24,6 @@ data class Deselect<T : Any>(
         }
 }
 
-fun <T : Any> Tiles<T>.deselect(key: NavKey<T>) {
+fun <T : Parcelable> Tiles<T>.deselect(key: NavKey<T>) {
     accept(Deselect(key))
 }
diff --git a/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/tiles/operation/DeselectAll.kt b/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/tiles/operation/DeselectAll.kt
index d1ff4b7a1a..24a4713517 100644
--- a/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/tiles/operation/DeselectAll.kt
+++ b/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/tiles/operation/DeselectAll.kt
@@ -1,5 +1,6 @@
 package com.bumble.appyx.navmodel.tiles.operation
 
+import android.os.Parcelable
 import com.bumble.appyx.core.navigation.NavElements
 import com.bumble.appyx.navmodel.tiles.Tiles
 import com.bumble.appyx.navmodel.tiles.Tiles.State.SELECTED
@@ -8,7 +9,7 @@ import com.bumble.appyx.navmodel.tiles.TilesElements
 import kotlinx.parcelize.Parcelize
 
 @Parcelize
-class DeselectAll<T : Any> : TilesOperation<T> {
+class DeselectAll<T : Parcelable> : TilesOperation<T> {
 
     override fun isApplicable(elements: TilesElements<T>): Boolean = true
 
@@ -24,6 +25,6 @@ class DeselectAll<T : Any> : TilesOperation<T> {
     override fun hashCode(): Int = this.javaClass.hashCode()
 }
 
-fun <T : Any> Tiles<T>.deselectAll() {
+fun <T : Parcelable> Tiles<T>.deselectAll() {
     accept(DeselectAll())
 }
diff --git a/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/tiles/operation/Destroy.kt b/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/tiles/operation/Destroy.kt
index 0af151f9b6..73a4d74165 100644
--- a/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/tiles/operation/Destroy.kt
+++ b/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/tiles/operation/Destroy.kt
@@ -1,5 +1,6 @@
 package com.bumble.appyx.navmodel.tiles.operation
 
+import android.os.Parcelable
 import com.bumble.appyx.core.navigation.NavElements
 import com.bumble.appyx.core.navigation.NavKey
 import com.bumble.appyx.navmodel.tiles.Tiles
@@ -8,7 +9,7 @@ import com.bumble.appyx.navmodel.tiles.TilesElements
 import kotlinx.parcelize.Parcelize
 
 @Parcelize
-data class Destroy<T : Any>(
+data class Destroy<T : Parcelable>(
     private val key: NavKey<T>
 ) : TilesOperation<T> {
 
@@ -22,6 +23,6 @@ data class Destroy<T : Any>(
         }
 }
 
-fun <T : Any> Tiles<T>.destroy(key: NavKey<T>) {
+fun <T : Parcelable> Tiles<T>.destroy(key: NavKey<T>) {
     accept(Destroy(key))
 }
diff --git a/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/tiles/operation/RemoveSelected.kt b/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/tiles/operation/RemoveSelected.kt
index 42fae5d2b1..5b4f30125e 100644
--- a/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/tiles/operation/RemoveSelected.kt
+++ b/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/tiles/operation/RemoveSelected.kt
@@ -1,5 +1,6 @@
 package com.bumble.appyx.navmodel.tiles.operation
 
+import android.os.Parcelable
 import com.bumble.appyx.core.navigation.NavElements
 import com.bumble.appyx.navmodel.tiles.Tiles
 import com.bumble.appyx.navmodel.tiles.Tiles.State.DESTROYED
@@ -8,7 +9,7 @@ import com.bumble.appyx.navmodel.tiles.TilesElements
 import kotlinx.parcelize.Parcelize
 
 @Parcelize
-class RemoveSelected<T : Any> : TilesOperation<T> {
+class RemoveSelected<T : Parcelable> : TilesOperation<T> {
 
     override fun isApplicable(elements: TilesElements<T>): Boolean = true
 
@@ -24,6 +25,6 @@ class RemoveSelected<T : Any> : TilesOperation<T> {
     override fun hashCode(): Int = this.javaClass.hashCode()
 }
 
-fun <T : Any> Tiles<T>.removeSelected() {
+fun <T : Parcelable> Tiles<T>.removeSelected() {
     accept(RemoveSelected())
 }
diff --git a/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/tiles/operation/Select.kt b/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/tiles/operation/Select.kt
index d64c069a3f..605fe66b1c 100644
--- a/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/tiles/operation/Select.kt
+++ b/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/tiles/operation/Select.kt
@@ -1,5 +1,6 @@
 package com.bumble.appyx.navmodel.tiles.operation
 
+import android.os.Parcelable
 import com.bumble.appyx.core.navigation.NavElements
 import com.bumble.appyx.core.navigation.NavKey
 import com.bumble.appyx.navmodel.tiles.Tiles
@@ -9,7 +10,7 @@ import com.bumble.appyx.navmodel.tiles.TilesElements
 import kotlinx.parcelize.Parcelize
 
 @Parcelize
-data class Select<T : Any>(
+data class Select<T : Parcelable>(
     private val key: NavKey<T>
 ) : TilesOperation<T> {
 
@@ -23,6 +24,6 @@ data class Select<T : Any>(
         }
 }
 
-fun <T : Any> Tiles<T>.select(key: NavKey<T>) {
+fun <T : Parcelable> Tiles<T>.select(key: NavKey<T>) {
     accept(Select(key))
 }
diff --git a/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/tiles/operation/TilesOperation.kt b/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/tiles/operation/TilesOperation.kt
index 8c691dea45..fadf5d35b8 100644
--- a/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/tiles/operation/TilesOperation.kt
+++ b/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/tiles/operation/TilesOperation.kt
@@ -1,6 +1,7 @@
 package com.bumble.appyx.navmodel.tiles.operation
 
+import android.os.Parcelable
 import com.bumble.appyx.core.navigation.Operation
 import com.bumble.appyx.navmodel.tiles.Tiles
 
-interface TilesOperation<T> : Operation<T, Tiles.State>
+interface TilesOperation<T : Parcelable> : Operation<T, Tiles.State>
diff --git a/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/tiles/operation/ToggleSelection.kt b/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/tiles/operation/ToggleSelection.kt
index 0067540524..deeff4b43d 100644
--- a/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/tiles/operation/ToggleSelection.kt
+++ b/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/tiles/operation/ToggleSelection.kt
@@ -1,5 +1,6 @@
 package com.bumble.appyx.navmodel.tiles.operation
 
+import android.os.Parcelable
 import com.bumble.appyx.core.navigation.NavElements
 import com.bumble.appyx.core.navigation.NavKey
 import com.bumble.appyx.navmodel.tiles.Tiles
@@ -7,7 +8,7 @@ import com.bumble.appyx.navmodel.tiles.TilesElements
 import kotlinx.parcelize.Parcelize
 
 @Parcelize
-data class ToggleSelection<T : Any>(
+data class ToggleSelection<T : Parcelable>(
     private val key: NavKey<T>
 ) : TilesOperation<T> {
 
@@ -35,6 +36,6 @@ data class ToggleSelection<T : Any>(
         }
 }
 
-fun <T : Any> Tiles<T>.toggleSelection(key: NavKey<T>) {
+fun <T : Parcelable> Tiles<T>.toggleSelection(key: NavKey<T>) {
     accept(ToggleSelection(key))
 }
diff --git a/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/tiles/transitionhandler/TilesTransitionHandler.kt b/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/tiles/transitionhandler/TilesTransitionHandler.kt
index 0a601648a4..82b14f28ab 100644
--- a/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/tiles/transitionhandler/TilesTransitionHandler.kt
+++ b/samples/navmodel-samples/src/main/kotlin/com/bumble/appyx/navmodel/tiles/transitionhandler/TilesTransitionHandler.kt
@@ -1,6 +1,7 @@
 package com.bumble.appyx.navmodel.tiles.transitionhandler
 
 import android.annotation.SuppressLint
+import android.os.Parcelable
 import androidx.compose.animation.core.Spring
 import androidx.compose.animation.core.Transition
 import androidx.compose.animation.core.animateFloat
@@ -20,7 +21,7 @@ import com.bumble.appyx.navmodel.tiles.Tiles
 import kotlin.math.roundToInt
 
 @Suppress("TransitionPropertiesLabel")
-class TilesTransitionHandler<T>(
+class TilesTransitionHandler<T : Parcelable>(
     private val transitionSpec: TransitionSpec<Tiles.State, Float> = { spring() }
 ) : ModifierTransitionHandler<T, Tiles.State>() {
 
@@ -62,7 +63,7 @@ class TilesTransitionHandler<T>(
 }
 
 @Composable
-fun <T> rememberTilesTransitionHandler(
+fun <T : Parcelable> rememberTilesTransitionHandler(
     transitionSpec: TransitionSpec<Tiles.State, Float> = { spring(stiffness = Spring.StiffnessVeryLow) }
 ): ModifierTransitionHandler<T, Tiles.State> = remember {
     TilesTransitionHandler(transitionSpec)
diff --git a/samples/sandbox/src/main/kotlin/com/bumble/appyx/sandbox/client/backstack/BackStackExampleTransitionHandler.kt b/samples/sandbox/src/main/kotlin/com/bumble/appyx/sandbox/client/backstack/BackStackExampleTransitionHandler.kt
index df1526deca..0d30b3e859 100644
--- a/samples/sandbox/src/main/kotlin/com/bumble/appyx/sandbox/client/backstack/BackStackExampleTransitionHandler.kt
+++ b/samples/sandbox/src/main/kotlin/com/bumble/appyx/sandbox/client/backstack/BackStackExampleTransitionHandler.kt
@@ -1,6 +1,7 @@
 package com.bumble.appyx.sandbox.client.backstack
 
 import android.annotation.SuppressLint
+import android.os.Parcelable
 import androidx.compose.animation.core.Transition
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.remember
@@ -12,7 +13,7 @@ import com.bumble.appyx.navmodel.backstack.operation.Replace
 import com.bumble.appyx.navmodel.backstack.transitionhandler.BackStackFader
 import com.bumble.appyx.navmodel.backstack.transitionhandler.BackStackSlider
 
-class BackStackExampleTransitionHandler<T> :
+class BackStackExampleTransitionHandler<T : Parcelable> :
     ModifierTransitionHandler<T, BackStack.State>(clipToBounds = true) {
 
     private val slider = BackStackSlider<T>(clipToBounds = clipToBounds)
@@ -31,7 +32,7 @@ class BackStackExampleTransitionHandler<T> :
 }
 
 @Composable
-fun <T> rememberBackStackExampleTransitionHandler(
+fun <T : Parcelable> rememberBackStackExampleTransitionHandler(
 ): ModifierTransitionHandler<T, BackStack.State> = remember {
     BackStackExampleTransitionHandler()
 }
diff --git a/samples/sandbox/src/main/kotlin/com/bumble/appyx/sandbox/client/list/LazyListContainerNode.kt b/samples/sandbox/src/main/kotlin/com/bumble/appyx/sandbox/client/list/LazyListContainerNode.kt
index 1eb67a0b81..d542a8c1c8 100644
--- a/samples/sandbox/src/main/kotlin/com/bumble/appyx/sandbox/client/list/LazyListContainerNode.kt
+++ b/samples/sandbox/src/main/kotlin/com/bumble/appyx/sandbox/client/list/LazyListContainerNode.kt
@@ -85,7 +85,7 @@ class LazyListContainerNode constructor(
     }
 
     @Composable
-    private fun ColumnExample(elements: ImmutableList<NavElement<NavTarget, out Any?>>) {
+    private fun ColumnExample(elements: ImmutableList<NavElement<NavTarget, out Parcelable>>) {
         LazyColumn(
             modifier = Modifier.fillMaxSize(),
             contentPadding = PaddingValues(horizontal = 16.dp),
@@ -99,7 +99,7 @@ class LazyListContainerNode constructor(
     }
 
     @Composable
-    private fun RowExample(elements: ImmutableList<NavElement<NavTarget, out Any?>>) {
+    private fun RowExample(elements: ImmutableList<NavElement<NavTarget, out Parcelable>>) {
         LazyRow(
             modifier = Modifier.fillMaxSize(),
             contentPadding = PaddingValues(vertical = 16.dp),
@@ -112,7 +112,7 @@ class LazyListContainerNode constructor(
     }
 
     @Composable
-    private fun GridExample(elements: ImmutableList<NavElement<NavTarget, out Any?>>) {
+    private fun GridExample(elements: ImmutableList<NavElement<NavTarget, out Parcelable>>) {
         LazyVerticalGrid(
             columns = Fixed(2),
             modifier = Modifier.fillMaxSize(),
diff --git a/samples/sandbox/src/main/kotlin/com/bumble/appyx/sandbox/client/spotlight/SpotlightFaderThrough.kt b/samples/sandbox/src/main/kotlin/com/bumble/appyx/sandbox/client/spotlight/SpotlightFaderThrough.kt
index 9a9168ea28..9a5d2e81a9 100644
--- a/samples/sandbox/src/main/kotlin/com/bumble/appyx/sandbox/client/spotlight/SpotlightFaderThrough.kt
+++ b/samples/sandbox/src/main/kotlin/com/bumble/appyx/sandbox/client/spotlight/SpotlightFaderThrough.kt
@@ -1,6 +1,7 @@
 package com.bumble.appyx.sandbox.client.spotlight
 
 import android.annotation.SuppressLint
+import android.os.Parcelable
 import androidx.compose.animation.core.FastOutSlowInEasing
 import androidx.compose.animation.core.Transition
 import androidx.compose.animation.core.animateFloat
@@ -19,7 +20,7 @@ import com.bumble.appyx.navmodel.spotlight.Spotlight
  * Fade through transition from material design
  * [Specification](https://m2.material.io/design/motion/the-motion-system.html#fade-through)
  */
-class SpotlightFaderThrough<T> : ModifierTransitionHandler<T, Spotlight.State>() {
+class SpotlightFaderThrough<T : Parcelable> : ModifierTransitionHandler<T, Spotlight.State>() {
 
     @SuppressLint("ModifierFactoryExtensionFunction")
     override fun createModifier(
@@ -91,5 +92,5 @@ class SpotlightFaderThrough<T> : ModifierTransitionHandler<T, Spotlight.State>()
 }
 
 @Composable
-fun <T> rememberSpotlightFaderThrough(): ModifierTransitionHandler<T, Spotlight.State> =
+fun <T : Parcelable> rememberSpotlightFaderThrough(): ModifierTransitionHandler<T, Spotlight.State> =
     remember { SpotlightFaderThrough() }
diff --git a/samples/sandbox/src/main/kotlin/com/bumble/appyx/sandbox/client/tiles/TilesExampleNode.kt b/samples/sandbox/src/main/kotlin/com/bumble/appyx/sandbox/client/tiles/TilesExampleNode.kt
index 9dae329535..600818c944 100644
--- a/samples/sandbox/src/main/kotlin/com/bumble/appyx/sandbox/client/tiles/TilesExampleNode.kt
+++ b/samples/sandbox/src/main/kotlin/com/bumble/appyx/sandbox/client/tiles/TilesExampleNode.kt
@@ -1,5 +1,6 @@
 package com.bumble.appyx.sandbox.client.tiles
 
+import android.os.Parcelable
 import android.util.Log
 import androidx.compose.foundation.clickable
 import androidx.compose.foundation.layout.Box
@@ -36,6 +37,7 @@ import com.bumble.appyx.sandbox.client.tiles.TilesExampleNode.NavTarget.Child1
 import com.bumble.appyx.sandbox.client.tiles.TilesExampleNode.NavTarget.Child2
 import com.bumble.appyx.sandbox.client.tiles.TilesExampleNode.NavTarget.Child3
 import com.bumble.appyx.sandbox.client.tiles.TilesExampleNode.NavTarget.Child4
+import kotlinx.parcelize.Parcelize
 
 class TilesExampleNode(
     buildContext: BuildContext,
@@ -49,7 +51,8 @@ class TilesExampleNode(
     buildContext = buildContext,
 ) {
 
-    enum class NavTarget {
+    @Parcelize
+    enum class NavTarget : Parcelable {
         Child1, Child2, Child3, Child4,
     }