Your Handy Guidebook
24 pages that guide you from easy circuit building to epic mind-blowing inventions.Get the Guide
Remember when your sister tied your shoelaces together? When dad made you eat ALL your brussels sprouts? (Seriously, yuck.) Well now it’s time to get them back. Your challenge is to invent a machine to prank your family, friends, pets or postman and see how loud can you make them scream!