Slap-Shot Science, the 32-page book included with this DIY kit from SmartLab, may seem incidental to the real, working air-hockey table (complete with blower) kids get to build, but the book is packed with info on the science and physics behind the beloved contact sport. Kids (and you, for that matter) will learn about friction, air pressure, Newton's Laws of Motion and other concepts while also getting detailed, diagrammed info on some killer air-hockey maneuvers.
$19.99 from Target.