I've always loved the Tesla Coil light balls, after seeing them in an art display in Boston, back when I was in college. My ex got me one for Christmas one year, which was a surprise because I never mentioned my wanting one before, but I was happy to accept it. It's survived several moves without breaking, and must be almost 20 years old by now. Technically I think it's called a Plasma Lamp, but I've always called it a Tesla ball.
