On his Maker Faire profile, Peter Ruck, creator of mousetrap catapult guns, states: “With a broken back from a train-hopping incident over 7 years ago, I need ways to stay busy and avoid the pain. Teaching after school and creating is what I do for that.” So he splits his time up volunteering at the YMCA and Make-a-Wish Foundation and “building random things.” The guns he makes are “powered by mousetraps and bungee cords [and are] ready for action. They are generally made of found objects and store-bought goods.” The guns can shoot all sorts of “ammo”—pencils, for example. They’re customized, too—“Some even have a beer opener.” Others incorporate forks and spoons. more ›