Here is a mini Cannon with a compact design that is capable of damaging cans, light bulbs, and other targets in your home. The Mini Cannon is handmade from brass. Tiny steel balls were used to fire at various targets to test the device. In the second video, you can see an improved version with a gunsight:
The bad news? You can’t buy this tiny cannon. You can see more videos on T. Shamir’s YouTube channel.