The Invention of Hugo Cabret by Brian Selznick - one of 15 books recommended by James Patterson. He covers thrillers, YA/children's, hidden gems, and more. My to-read list is growing by leaps & bounds!
"Building Bristlebots: Basic Toothbrush Robotics": With a bag of toothbrushes and some basic electronics supplies, you can give a group of kids a fun introductory experience! Once you have a crew of working bots, get creative building mazes and tracks!