These dice create an impossible figure.
These dice can be perceived
in many different ways.
In the video below, a single die breaks the laws of physics.
It's actually a magic trick, but I'm a sucker for tricks that fool you using simple little items to do impossible things. Even though there's a person operating it, and I know there's got to be something special about the items, I like to believe that they could operate by themselves as a kind of magical optical illusion puzzle.
The hydro die magic trick
Twisted Dice by Anh Pham, New Optical Illusions>>