LEGO Chain Reactions

$29.95 at The Metropolitan Museum of Art.

Complete an ordinary task in an extraordinary way. Learn to build 10 LEGO machines that can swing, pivot, roll, lift, and drop. Then connect, rearrange, and experiment with the machines to create a chain reaction. With this book in hand and a handful of basic bricks from your LEGO collection, all you'll need is a little imagination. Includes 80-page book of instructions, 33 LEGO pieces, instructions for 10 machines, 6 plastic balls, string, paper ramps, and other components.