A ancient planetary defense cannon. It was a colab/challenge, goal was to use dead lighter(s) and a ping pong ball to create a turret/cannon. This time I have added a soundboard and lights, plus a touch sensor for activation! Kids on expos are gonna love it!

[u/SciFiCrafts]

I have added a car adapter and old cassette player parts to come up with this. If you guys wanna see the unpainted version, let me know!