On a tight budget? I found a clip on YouTube explaining how you can build your own t-shirt launcher. Actually its a fun science class like do-it-yourself weekend warrior version of a gun, but the principles are all the same.

Or you can go with the book by these guys which also explains how to build your own cannon next weekend in your garage.

If you aren’t feeling crafty or would just rather have a polished and professional version of an air cannon The Store on Gameops.com has a growing selection of launchers, cannons and slingshots that is hard to top. (Click for The Store).  The new store has some cool features like color selection and videos of the cannons as well.

–Cudo