When I wanted to build a cube, I had begun by posting some questions here. When I suggested I wanted to start "small" and build my first cube from a limited pool of sets... well, your responses were largely quite cold and/or rude... but I never let the words of mortals deter me. Along with the assistance of some of my Magic-playing friends, we developed the MirroCube.
I'm not going to get into any long-winded explanations about card selection or what not in the OP. If you have questions or comments, however, I will happily address them as you present them. We did try to set up a few "decks" in the list, and testing/force-drafting led to many changes, most notably being far more selective about the larger spells. If your favorite fatty isn't in my list, it was cut to avoid having this cube be a ROE "battleship Magic" type experience.
Some of the cards are somewhat pimped out, but I don't presently have it photographed. I might do it, I might not.
So, without further ado, the MirroCube:
(Note: I'll fix the formatting a bit more when I have the time. I had a serious issue porting the list over from another forum I posted it on.)