This sounds cooler than geocaching.
Part sport, part art, GPS drawing lets runners, walkers, cyclists and hikers imagine themselves... neo-cartographers, jumbo-size doodlers and bipedal pencils, mapping their track lines[.]Article at NYTimes.com.
Everytrail.com:
With EveryTrail, sharing your trip experiences has become a lot more fun: using a GPS device you can easily plot the exact path you traveled on an interactive map, with your photos positioned on the map at the exact location you took them.A cool gallery of someone doing this for 10 years.
How cool & appropriate would it be to include this in our Columbus Day Weekend event?