In this book you will learn how to make a counterfeit bill detector, create your own home security system, and generate battery power with fruit from your refrigerator. This updated edition includes over a dozen all-new magnetism and motor STEM projects and design ideas. This quirky collection is a fun resource for transforming ordinary objects in to the extraordinary. With over eighty solutions and bonus applications at your disposal, you'll be ready for almost any situation, and the detailed, step-by-step instructions and diagrams enable you to complete projects in just minutes.