Potato Gun

How much do you think a potato cannon can run for? It's simply made with PVC pipes, a 2', 4' diameter combustion chamber, with a 4', 2' diameter barrel? It's a really fun toy, but can be a little dangerous. I launch potatoes, lemons, and even golf balls out of it. (To launch a golf ball, I simply pack a wad of newspaper tight into it and put the golf ball in it after.)

you can sell em for whatever they are willing to pay for it but after you sell it remember you will be sued for everything you own when some idiot blows up the tube and sends someone to the hospital.

don't deny it, you know it will happen, its just a matter of how many beers it takes for someone to get stupid