Author of the previous Cubicle Warfare, Austin's new book is a comprehensive HowTo manual for creating weapons from your typical junk drawer contents.
The book demonstrates:
"35 devices, including catapults, slingshots, minibombs, darts, and combustion shooters. Build a tiny trebuchet from paper clips and a D-cell battery. Wrap a penny in a string of paper caps to create a surprisingly impressive bomb. Several of the projects even include variations where combatants mount laser pointer sights to their shooters to increase their accuracy."
Freebie! Gizmodo offers up Austin's full DIY pencil crossbow HowTo.