This is the Halloween Candy Cannon. A tool for avoiding trick or treaters or pranking your friends.
Check out Audible: http://audible.com/household
We built this device using several pieces of 2 foot PVC pipe and ball valve, and a simple tire stem from a car tire. The pressure is built up from a bike pump and then released by turning the ball valve. Whatever you put in the tube will fire out and be delivered to your trick or treaters.
Read More