Make Fifty Wild and Wacky (But Useful) Contraptions By Eric Chaline and Robert Brandt. This guide shows you how to make a solar-powered plant shader, a coin-operated toothpaste squeezer, a wind-powered rocket launcher and more! Invoke your inner inventor. Impress your family and entertain your friends with these cool and crazy contraptions that perform all sorts of awesome functions. PB. 125 pgs. K3703
