Anyone here ever heard of geocaching? Anyone participate? It sounds like fun. I just need to get my hands on a GPS device.
http://www.geocaching.com/
Added:
Well I forgot to say what geocaching is. #-o
Basically you hide a box of something (called a cache) out in the world somewhere. You take its coordinates and post them on the geocaching website (above). Then people go and find it. Of course, you also look at the site, get some coordinates, and go hunting.