This mod adds one block: The Auto-Ender chest.
It is a block that makes your enderchest inventory accessable by hoppers. Visually it resembles a chest with a red lock instead of the golden one.
When you place the chest, it will be bound to you. Right clicking will open your ender inventory like a normal ender chest. However, others may also open it and they will also see your enderchest instead of theirs. And you can use hoppers to put/pull items into and out of your enderchest inventory.
Hope you like it!