This ping pong ball rainbow will look good just about anywhere in your house, including a children's space, the front door, or the living room. First, choose a color palette for the rainbow ...

[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 ...

The diameter of ping pong balls is a mismatch for the spacing of LEDs on a strip. The solution? A bit of force. The technique we want to highlight is not the fact that he used table tennis balls ...