KLUTZ-Crazy Action Contraptions. This is a fantastic way to re-awaken the little engineer in all of us. This book is full of crazy contraptions made by completely by Lego's and rubber bands. Sixteen crazy contraptions that zoom across the floor, fly down a zip-line, add a new flair to drawings, spin your way to destruction and much more! Kit contains all the Lego blocks, gears, and axles you need as well as step-by-step illustrated directions, a troubleshooting section, a Make-Your-Own section that explains the detailed workings of each part, and a storage box for all of your little Lego parts. Recommended for children ages 7 and up. WARNING: Choking Hazard-small parts. Not for children under 3 years. Author: Doug Stillinger. Spiral-bound with a soft front cover and hard back cover. Imported.