My suggestion to the geocaching community, which you may have already done, but I am so new that I don't know about...
...would be to create a standard plastic card, similar to those drivers license sized reference cards you find at the checkout, that concisely explain geocaching and how to get started. That way, I wouldn't have been sweating getting accosted by Forrest Gump over touching his "Bawox!" I did notice a sticker on the side of the ammo box, with some geocache info on it, but it didn't look official enough for this muggle. You could throw a bunch of these cards in the cache and invite muggles to take them and join the hunt.
Heck, you could even create a collector card series, that could be collected/framed/traded and what not...
...if you want anymore free business tips, I am gonna have to charge!!!!!!!
Scratch that, I am starting a geocard printing company tomorrow. Does anyone want to do some design work? Send me your resume. JUST KIDDING, LOL!