If you want to build your own catapult in your backyard, then this is the one stop shop for catapults that you have to visit at least once. DIY catapults has information on how to build catapults as well as a very cool catapult design contest where you can wine some real cash. If you have any thoughts of building a catapult, then consider the design contest because you could probably use some extra cash, I know I could!

For more info on catapults click here!