Toy Biz Marvel Legends Wall Accessory
Super Glue and Baking Soda (to fill gaps)

I try to snag background diorama accessories when I see them for cheap, and I ended up with 4 or 5 of the same wall accessory from the older Toy Biz Marvel Legends figures.

Initially I was just going to give them all a uniform dry brushed paint job, but then I realized it would be pretty easy to cut them up and rearrange them into unique pieces.

I believe the one on the left in the image is unmodified, so you can see just how different they can look by doing something as simple as removing the wall from the base and reattaching it upside down.