Inside and outside of cube

I was thinking about inside and outside of cube because they are as equally important as the actual function. To bring another element in, I thought about light using mirrors. Mirrors reflect light and if infront of a light source would create some nice patterns on sourrounding walls.I am also still looking into patterns that I could use and thought about the idea of using patterns that create optical illutions. I came across this idea on a site called stumbleupon : . I have always thought these we so cool so I could maybe incorporate this in my cube.