***EDIT*** SCROLL TO THE BOTTOM TO SEE REVISED IDEA!!!!
This one is rather simple idea, A rubik's cube, which hides a fully functioning computer within.
Pretty much that but with different colored LED's that light up when you turn the computer on.
Or perhaps, if you could, make the top part of the cube spin when turned on, it could be like a fan on top but as though it were trying to solve itself.
I hope you guys like the idea.
This is my new idea, in which the top part raises up, hiding the optical drive, and a rough idea of the size of the case.
With a 2.5 inch HDD or 3.5 inch HDD, and external powersupply found at http://www.mini-box.com/Power-Supplies-Kits
there should be plenty of space for the board, RAM, fans, etc..