[Jacob] has put a slightly new twist on the levitating ball trick with his ping-pong ball levitation machine. We’ve all seen magnetic levitation systems before. Here on Hackaday, [Caleb] built ...

If some of your ping pong balls are dented or crushed, don't worry — they're still usable. To restore their shape, immerse the balls in a pot of hot water or pour boiling water over them.