Geocaching: "Geocaching" is one of the new outdoor sports that has grown up around GPS units. It is essentially a GPS style treasure hunt, where your GPS unit is used to guide you to the cache. Actually, it's quite fun, and great reason to get outdoors, and play with your "toys". Naturally, a whole community has grown up on the Net, and probably the most common one is www.Geocaching.com.
The "Degree Confluence Project": Confluence.org: Somewhere along the way people began to wonder "What's at 32 deg.N/-112degW" - or something like that. The effort is to photograph all the even degree Latitude/Longitude locations on earth. Confluence.org is a website where this is conducted, and the photographs are posted. If you want to participate, pick an even Lat/Long locations, use your GPS to go there, photograph it, (along with your GPS unit for proof), and send it in!
There are of course many other activities for having fun with your GPS and your copy of GPS2CAD. We'd love to hear from you!