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 ...

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 ...

The end result is a 3D printed low-energy ping pong rail gun, more or less. The design is pretty clever and you might find some ideas even if you don’t want to actually accelerate ping pong balls.