Ever thought of building your very own Potato Canon which is powered by a hairspray! Well, Instructable user Matt (who is an engineer by the way) has just the equipment and procedure for you. Utilizing one of the commonest thermo-plastics, i.e., ABS pipes along with some other readily available materials, this DIY gun is touted to shoot potatoes over a distance of a whopping 100 yards. The components required are - two types of ABS pipes (5ft of a 3 inch pipe and 2ft of a 1.5 inch pipe), a reducer, a thread adapter, an igniter, and an end cap along with some ABS cement. Now, for the projectile part of course you would require potatoes and a hair-spray. Finally after the assembly, the whole project would only cost you $30 and an hour of your precious life.