Movie night. Everyone has movies they want to watch but how do you decide which one? I built a spinning prize wheel to help randomly choose what movie we watch each week. Of course it'll be useful for other things too. Piece of plywood spinning on a bearing. Spins really well, almost too well. It goes for a while. Flapper/arrow is made from a thin piece of project board. (1/32 inches, I think.) It's very flexible and will probably break, at which point I'll likely replace it with an old credit card or something.