Recycle: Toys from Trash
Arvind Gupta thinks “The best thing a child can do with a toy is break it!”
I don’t even know where to start with this one. His web site boasts an astonishing range of educational experiments like how to fashion a potato battery and a bottle barometer. But in addition to the nerdy, educational stuff, the site features quick and easy one-offs that aren't the least bit science-y, like how to fold six types of newspaper hat.