Make: television presents:

Treadmill Bike - Brent Curry crosses a two-wheeled bike with a treadmill to allow the rider to produce a double-whammy of a workout.

RoboStool - Steve Norriss remote-controlled robotic foot stool comes to him wherever he wishes to sit.

Foundry - 14 year olds Oliver Ramin and A.J. Brackovitc make their own foundry for molding aluminum swords.

[Trouble Maker] Death Ray - Richard Whitney uses sunlight and the Fresnel lens from a rear projection television set to melt a steel security lock.