They are called catapults, trebuchets or cannons. They used to be instruments of war, but today they are operated by kids and adults alike and they are used for tossing pumpkins as far as humanly possible. Kids that compete in this annual event have been known to toss a pumpkin from 800-plus feet last year to almost half a mile this year. They make their contraptions out of anything they can find one trebuchet that's all aluminum, uses about 20 garage door springs and they use an aluminum boat mast as the arm of the trebuchet. These kids are the future engineers and the future looks bright.