I watched this movie that talked about pinhole cameras and it perked my interest so I researched them and they're pretty awesome! So I made one.
If you're interested here's a link that will show you how to make one like mine: http://www.matchboxpinhole.com/index.html
Also here's a link with some more information and more links: http://www.lowtechmagazine.com/2008/04/camera-obscura.html
Here are some pictures taken with a matchbox pinhole camera so you get the idea. (I didn't take these btw)