Geocaching

This looks interesting, one of the guys at work is involved in this hobby. Basically, people hide little boxes with fun stuff in it, then post the location on the internet. Then other people go find it and swap items out, meanwhile they post notes and pictures on the Geocaching website. There are many variations on that theme, and there are thousands and thousands of caches in more than 200 countries. I'm definately going to try this out. :-)