I think the idea of a relatively tough hike and find, kind of like adults only, and having some things worth finding is cool. The kids enjoy little plastic toys, but after climbing hills, rocks, mountains... it be nice to be a little better rewarded. Don't take this as a huge complaint, I'm a newbie and I'm definately going after all the caches I can find. But check this cache out near Napa, CA.
http://www.geocaching.com/seek/cache_detai...b1-bab35f7dbabc