I think that blocks that endermen pick up should end up being randomly placed in the End. I was just playing in survival mode the other day when an endermen stole meh iron blocks! I think that it would motivate people to go to the End more. Just a thought.
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As of Minecraft 1.8.1, Endermen can pick up and any solid, entirely cubic block except the following:
Any double slab
Bedrock
Chest
Dispenser
Furnace
Jukebox
Monster spawner
Note block
Piston and sticky piston
Snow block
They can, however, pick up the following blocks which are not entirely solid cubic blocks:
Cactus
Flower (both types)
Mushroom (both types)
Notably, tilled farmland is not a full height block and the Endermen cannot pick it up, but if they walk on it, turning it back into a dirt block, they can pick up that dirt block. Likewise, Endermen cannot pick up stairs (any type), half slabs (any type), fences, doors, gates, iron bars, cobwebs, beds or cake.
Endermen cannot pick up things attached to blocks, such as buttons, ladders or redstone wire. However, they can pick up the block it is attached to, which will cause the attached thing to drop as if the block was destroyed.
Endermen can pick up both naturally occurring blocks and blocks placed by players. In the Minecraft 1.8 pre-release they were able to move bedrock, but as of Minecraft 1.8.1 this is no longer possible. They cannot pick up water or lava.
(Sources: Sir_Tiffy on Reddit, MrPixelTech on Youtube, testing in Creative mode, and the swiss cheese pattern of Ender-holes in my monster grinder)
"
great idea except 1 thing, wat bout the 1s u dont see?milions of enders who are in known chunks and are able 2 pick up stuff u dont seeif u kill ender after it grabs block, you should be able to get back the block along with watever else it drops
1. The End isn't generated until you step in the portal
2. Endermen can't pick up iron blocks
"Gods will always behave like the people who created them"
When I was playing, it was when endermen first were released (the 1.8 pre-release I think)
Also, endermen can appartently pick up iron blocks
Go here
http://gaming.stackexchange.com/questions/30069/what-blocks-can-the-enderman-pick-up-and-what-blocks-cant-they-pick-up
"
As of Minecraft 1.8.1, Endermen can pick up and any solid, entirely cubic block except the following:
Any double slab
Bedrock
Chest
Dispenser
Furnace
Jukebox
Monster spawner
Note block
Piston and sticky piston
Snow block
They can, however, pick up the following blocks which are not entirely solid cubic blocks:
Cactus
Flower (both types)
Mushroom (both types)
Notably, tilled farmland is not a full height block and the Endermen cannot pick it up, but if they walk on it, turning it back into a dirt block, they can pick up that dirt block. Likewise, Endermen cannot pick up stairs (any type), half slabs (any type), fences, doors, gates, iron bars, cobwebs, beds or cake.
Endermen cannot pick up things attached to blocks, such as buttons, ladders or redstone wire. However, they can pick up the block it is attached to, which will cause the attached thing to drop as if the block was destroyed.
Endermen can pick up both naturally occurring blocks and blocks placed by players. In the Minecraft 1.8 pre-release they were able to move bedrock, but as of Minecraft 1.8.1 this is no longer possible. They cannot pick up water or lava.
(Sources: Sir_Tiffy on Reddit, MrPixelTech on Youtube, testing in Creative mode, and the swiss cheese pattern of Ender-holes in my monster grinder)
"