Welcome to Ender Flowergirls!
Ever build a base, and then have the Enderman come around and steal your blocks?
Ever play on a world for any significant amount of time and have the Enderman swiss cheese your world?
If you said yes to either of the above, and LIKE to keep mob griefing on, then this is the mod for you!
Weighing in at a tiny 3kb, this mod will simply set all standard blocks as non-carryable for Enderman except the Vanilla yellow and red flowers.
To install, just dump it in your mods directory, and delete it to remove.
This probably can just be installed on the server side if playing in MP