Rubix Cube
From Equestripedia, the Archives of Equestria!
A Rubix Cube is a 6-sided cubical object with several colored squares. The purpose of a cube is simple, to make sure all squares are of the same color on each side.
History
Twilight Sparkle attempted to solve a Rubix Cube with Spike to cheer her on. She struggled with it but Pinkie Pie soon swooped in, ate the cube and brought it out of her mouth, revealing that it was fully solved.[1]