Rarity's side up because Rarity is best pony.
Quinnjaminn built this awesome pony Rubik's cube made out of the main cast's cutie marks! It looks awesome, as does the charts that it's sitting on. I only wish that I had the mental capacity to actually solve one of these. As it is, I can barely feed myself. I set a tuna sandwich on fire once. True story. I'll tell it later if you want.
You can check out the cube here, on his DA page.