Make Your Own Paper Boomerang
Looking for a fun project on a Saturday? Got some kids handy? Not scared of scissors? You can make tiny cardboard boomerangs! Here's a short demo from The Curiosity Show showing you exactly how to make a little boomerang that actually works:
For much, much more on this general topic, see David Rees's wonderful How to Throw a Paper Airplane (full episode, free with ads on Hulu).