I'll be uploding these randomly so be patient, and right your suggestions in the commments, plz. =]

The first one I'll be doing is the Wither Statue.
 
The materials you'll need are: 2 stone slabs, 1 item frame, 1 nether star, 4 fences, and 3 wither skulls.

1. Place two stone slabs on top of eachother.
2. (Optional) Place a item frame on the front of the slabs, and put a nether star in it.
3. Place a fence on top of the slabs, and place another fence on that one, then two more fences on the both sides of the top fence.
4. Place 1 wither skull on top of each fence.

Now its done! Hope you like it (Look at the picture to make sure if its right)! =D

The point of this is to look like an armor stand, and hold your wither skulls if you don't want to destroy your world by making the wither.