How to how to make a catapult out of office supplies

Bored at work or school? In the middle of waging a cubicle war, and need to up your arsenal? Just like making catapults? This video shows you how you can make a basic catapult out of an assortment of office supplies. To make your catapult, you will need a ball point pen, a large binder clip, a few rubber bands... and, of course the ammo! Crumpled up pieces of paper or Post It notes work very well as ammo.