Before you toss out that old floppy disk or wristwatch, think about how your kids, with minimal tools, could disassemble it and use it for something else. Not only will they get some experience in seeing the inner workings of stuff our society considers valuable, they’ll also have access to various gadgets and materials that could be used in constructing something else; a little more interesting than construction paper and glue. Some common sense is in order, though. Electrically powered items can have hidden dangers like parts still holding an electrical charge long after they have been unplugged, or electrical power cords that could find their way back into an outlet (always cut them off first). If you’re unsure, ask a professional who knows what’s inside.