OK, this might rival The Dangerous Book for Boys as the top book-I-wish-I-had-time-to-try-(almost)-everything-in:

Mini Weapons of Mass Destruction: Build Implements of Spitball Warfare

From the description:

This humorous MacGyver inspired tactical guide illustrates the full potential of everyday items and their lethal potential to be transformed into a menacing arsenal. Learn to build Shoelace Darts, Clothespin Catapult, Penny Bombs, Airsoft Pen Poppers, Ping Pong Zookas and thirty more inexpensive Mini Weapons of Mass Destruction.

This is an enjoyable book for all ages. It pushes the laws of physics, inspires youth creativity, proposes experimentation and fuels the imagination. Many of the launchers cost only pennies and are great representations of their real life counterparts.

And then, of course, there is a disclaimer…which makes it even more tempting:

These books are written as a source of information containing only the highest quality of mischievous information.…

The author and the publisher expressly disclaim responsibility for any adverse effects arising from the use or application of the information contained herein, including the termination of your job, the loss of your friends, or the angry looks you’ll get from coworkers.…

It is important that you understand neither the author, the publisher, nor the bookseller can or will guarantee your safety. When you try these projects described here, you do so at your own risk.

I’m pretty sure this book will make me a better dad by about 40%. Not sure my wife will agree.