Mirrors!

WasteIand Outlaw

How bout something that reflects what is at your back and it can be a decorarive item too :D You can also make mazes more complicated x.x.

Siddd

I don't pretend to know anything about game development, but I think mirrors would be a very intensive item that most mobile application devices wouldn't be able to utilize.

WasteIand Outlaw

I know that this may be a laggy block, but think about it Mr. Siddy, it would be nice if they add decorarive mirrors :D