I think I've always loved cannons, don't ask why, don't know. But I remember being in a little Spanish town named Tossa del Mar in the late 60's, visiting their castle, laying my hands on one of the cannons there, turning to Mac and saying, "I want a cannon!" Throughout the years I've repeated this message to Mac, and then a couple of years ago he made me a cannon, it doesn't fire, but it's a great little cannon. It lives out in our backyard and I envision me sinking marauding pirate boats with it.
Then last night I saw the coolest, and I do mean coolest, thing! While searching for something to watch on tv I ran across Mythbusters, a show we always enjoy, but don't often remember when it's on. Anyway, they were doing a whole episode on duct tape, how cool is that? They lifted a man using duct tape, they lifted a 5,000 lb. car using duct tape, they plugged a hole in a boat using duct tape, they even built a sailboat out of duct tape, and it sailed. But best of all, the built an actual working cannon out of duct tape! It fired a cannon ball about 125 ft. and it didn't blow up. I want one, and I'm betting I'm not the only one who's going to try and build one.
The video of the cannon can be seen at http:/dsc.discovery.com/video/mythbusters-duct-tape-cannon-angle-3.html