Vroom! This jam-packed kit contains ten cool projects all centering around motors. Make a drink stirrer, a race car, a game spinner, a fortune teller, and more! This is great fun for future engineers who want to be inventors, but don't have the chops yet to start from scratch. The accompanying book explains scientific concepts in a clear, non-threatening way. A terrific outlet for kids who love things that go! (Smart Lab, $14.50)