Any suggestions of things to do with a 18m old this weekend?

[Anonymous]

We are home alone and although we just came back from a trip, I don't feel quite done with vacation yet. Any suggestion of something fun to do besides pet zoo, farmers market, pool and playground?

[Anonymous]

Hmmm, that's pretty much what we do every weekend, and we always have a lot of fun. We also have friends over a lot for BBQs and splashing in the blowup pool. Do you have one of those hiking backpacks? A good hike is always fun. We really don't do "day trips" yet because my DS still naps in the middle of the day but at some point I'd like to take him to the Baltimore Aquarium.

[Anonymous]

My DS loves carousels and trains - Wheaton and Watkins parks both have both.