DIY Hovercraft

Make a very lovely hovercraft! This super awesome DIY project requires a bit of parent or teacher supervision (sharp needle needed to make a hole), but overall, it answers all of my wishes: Not only does it teach about physics and get kids making things that are fun, but it gives us a great use for the old CDs that we have in boxes around the house! (And there are quite a few.) That alone makes this project a gem in my book.