WOW: That sounds like a great idea to me. Teach the kids how not to get lost if they have a GPSr. You must be selling GPSrs or you might want to take a few with you to this event to sell. I can just see the parents wanting to get one to hang around their kids neck everytime they go camping or hunting, setting the waypont of camp or car and teaching the kids how to use the GPSr to find there way back if they get lost. I have heard of a lot of fatal cases of lost kids that could have been different if the parents had known about the GPSr and had learned to use it.
This is the practical way to use a GPSr, Geocaching is the fun way.