An assignment I had to put together. The constraints were a cube that was no larger than six inches and had a circular feature on at least three sides. So... I made this. It's only a half inch. I cut it from a piece of stock aluminum with a jeweler's saw and bent it into the shape of a box, and then gave it brass edging. It isn't a very refined piece... It was only done in about fifteen minutes, but it is cool nonetheless and the teacher loved it.