Of course it helps a lot if you can build a flamethrower.
"But when it comes to the theory and practice of making your own noisy, mildly dangerous fun in the backyard, America has a new poet laureate. His name is William Gurstelle, and he staked his claim to do-it-yourself greatness in 2001 with his friendly paperback book “Backyard Ballistics.” Its subtitle tells you all you need to know: “Build Potato Cannons, Paper Match Rockets, Cincinnati Fire Kites, Tennis Ball Mortars, and More Dynamite Devices.” According to the author, it has sold more than 250,000 copies. I keep a well-thumbed copy in the upstairs bathroom."
The book is hurtling toward us in a couple days.