I've got a 1-1/2 yr. old I usually take out with me on cache hunting. I've found caching with the stroller and toddler a wonderful "cover" when I'm doing urban caches. People don't seem to look twice at a mom crouching by a stroller even if she's reaching into metal grates or pawing through nearby bushes. And as many of the sites are in nice parks, baby gets to try out new play equipment. Daddy seems to think this is a pretty silly hobby, but he likes going out for a hike with us anyway.