Here on Hackaday, [Caleb] built a Portal gun which levitated a Companion Cube. Rather than go the magnetic route, [Jacob] levitated a ping-pong ball on a cushion of air. Now, it would be ...

Next time you’re in a Nerf gun battle, you better hope you’ve got this absurdly powerful ping pong ball gun. It shoots common celluloid spheres at over 400 meters per second, or Mach 1.2. This ...

Once full, connect the wire at both ends to form a wreath of ping pong balls. Paint the wreath the color of your choice, and use a hot glue gun to adorn it with faux flowers, foliage, ribbons ...