Lance Akiyama’s book ‘Rubber Band Engineer: Build Slingshot Powered Rockets, Rubber Band Rifles, Unconventional Catapults, and More Guerrilla Gadgets from Household Hardware’ features 19 individual projects that are made with rubber bands, along with various other items, to create things such as a crossbow, slingshot, and rubber band gun.
If you’re not entirely convinced, there’s also plans to create a miniature version of one of the greatest siege weapons ever developed: the trebuchet!
You can find ‘Rubber Band Engineer’ most places where books are sold.