I've been fascinated by catapults ever since I was a little kid. Word must have gotten out because I received a trebuchet kit as a Christmas (2006) gift. I built the kit with my seven year old son between Christmas and New Years.
I put together a little video to show you my trebuchet (see below). That's me (the adult) in the video.
This device is actually a "floating arm trebuchet" and it can launch a golf ball over 100 yards with 15 pounds of counter weight. How cool is that?!
And there MUST be a way to turn this into a teambuilding game. Any ideas?
Oh, and if you're wondering, my trebuchet kit came from the folks at rlt.com. The kit was easy and fun to make.