There have been some great posts on our forums about involving children (both the young and the young-at-heart) in outdoor activities.
Here's a good article specifically about
hiking with newborns and very young children. And another one on
day hiking with toddlers and kiddos up to age 4.
We've taken Sara on a few short hikes, but I confess I'm far behind on sharing photos of those, much less writing them up as our first of many trip reports as Mom+Dad+Sprout.