From a working kaleidoscope to a marble runway, a robotic hand, a flying rubber-band airplane, and a flapping prehistoric bird, these ingenious projects -- all made with cardboard boxes, sheets, and tubes -- are sure to excite and engage kids who love to build, tinker, and invent. With easy-to-follow, step-by-step photographic instructions, kids are encouraged to exercise their engineering smarts, expand their 3-D thinking, and learn cool building techniques. Ideas for customizing and tinkering make this ideal for school science fairs, family projects, and classroom collaboration.