Sun Jun 24 2007 21:55 Water bottle siege engine:
I didn't see anyone else doing this at Foo Camp, so I kept the detente, but now I can reveal the deadly secret behind the overly complicated free water bottle we were given. In the wrong hands, it becomes a catapult, capable of lobbing little balls of paper over two feet. This 2-second video smuggled out of my digital camera tells the story.
under a Creative Commons License.