Aluminum Case
Computer case made from recycled aluminum and pop rivets.
I had my computer in this case for two or three years... There are a few issues like having the MB flat on the bottom means any piece of dust or crud that gets inside just sits on the MB...
It was also a real pain to replace any of the components on the MB like like the video card because I made it so cramped. I still have the case, but its currently empty.