I'm still new to this (only been tagging along with my girlfreind on her caching trips the past few weeks) but I recently had the idea of bringing one of my hobbies into it. I collect glass insulators, and have a bunch of double and triples I've been looking to get rid of, but I didnt want to throw them away. So I typed up a little card telling what it was and a link to a website with more information on the hobby, and tied it to it, I put one in the last two caches I've been to. I might do some more in the future. What do you guys think of this idea???