I've been tempted to make some Geocaching pens for first to find prizes.
As a long time geocacher (1st or 2nd in Louisiana) I really like the pen. I have placed a few credit card pens in caches for first finders. That is a good idea.
I've been a cacher since mid 2001. A couple years ago, we gave out some pens as geocaching event prizes, but I've never actually left any inside a cache. My concern with that is that it can get mighty hot inside an ammo box. I would hate for the pens to get ruined before anyone could appreciate them. Of course, if you live in an area where the FTF hunt is intense, the pens might only be in there for a couple of hours, so it might not be an issue.I've been tempted to make some Geocaching pens for first to find prizes.