How can I build a LEGO Rubik's cube, I have 2 of them, and I've built them several times, but how can I build a LEGO Rubik's cube.
There seems to be basically two choices. You can either build a larger version than the traditional cube, or you can build something that doesn't stay together very well.
There's a nice example of a small cube on Sebastians Sand's Brickshelf:
While this looks like it would work, I can't imagine that it holds together through many rotations.
If you are willing to build something a bit larger, there are some good examples available, but it looks like it gets fairly complicated.
Here is a video on how to stick LEGO bricks on to a Rubik's cube.