Mini Weapons of Mass Destruction: Build a Secret Agent Arsenal

Mini Weapons of Mass Destruction 3: Build Siege Weapons of the Dark Ages

Mini Weapons of Mass Destruction: Build Implements of Spitball Warfare

Mini Weapons of Mass Destruction: Build and Master Ninja Weapons

Backyard Ballistics: Build Potato Cannons, Paper Match Rockets, Cincinnati Fire Kites, Tennis Ball Mortars, and More Dynamite Devices

The Best Advanced Paper Aircraft Book 1: Long Distance Gliders, Performance Paper Airplanes, and Gliders with Landing Gear

The New World Champion Paper Airplane Book: Featuring the World Record-Breaking Design, with Tear-Out Planes to Fold and Fly

Cubicle Warfare: 101 Office Traps and Pranks

The Best Advanced Paper Aircraft Book 2: Gliding, Performance, and Unusual Paper Airplane Models

The Best Advanced Paper Aircraft Book 3: High Performance Paper Airplane Models Plus a Hangar for Your Aircraft

Defending Your Castle: Build Catapults, Crossbows, Moats, Bulletproof Shields, and More Defensive Devices to Fend Off the Invading Hordes