I have to agree -- the Presidential Series is a good place for kids. At least the NW section we did (only part I've done so far.) I took my daughter there not too long ago. Wide, open 'trails' and little bushwhacking led to a very happy kid cacher. The big and creative hides were a huge hit. We didn't push it (rather, I didn't push her), as we did others in the area we did and still wanted to do and had a nice lunch planned afterward. But we did 20something in the forest on a beautiful day and it was a really great time. Kids will love the creative and larger containers and the nature hit without being *in* the nature, or something like that is how my daughter says it.
Here's one in the series near the parking: http://coord.info/GC3W2M9