Have you heard of "geocaching"? Jennifer MacLennan of Saskatchewan, Canada, designed this button for her husband who recently took up the sport. Geocaching is a world-wide treasure hunt game. Participants hide items in caches for other players to find with a GPS, using coordinates posted on-line. "Geocachers trade items (swags) in these hidden caches," said Jennifer. "I made this button for my husband to leave for others to find. This is his signature item." The buttons are considered desirable swag items, Jennifer said, and several players have requested signature buttons of their own.