A plugin that adds craftable "Invisible Item Frame" items. These can be placed, and look like a normal item frame while they're empty, but once you put in an item they become invisible.
Check out this video for an example: https://www.youtube.com/watch?v=cfkPTMtQY_o
Code is licensed under MPLv2, full text in LICENSE-MPL. Any contributions are assumed to be under this license.
To build the project, import the Maven build (pom.xml) into your
favorite IDE and you should be able to build it immediately. Make sure
any IDE cache files are put into .gitignore.