Where is the nearest children's museum to Mamaroneck?

Well, currently in the works is Westchester Children's Museum which will be located in the historic bathhouses of Rye Playland and will be pretty awesome and only a ten minute drive from Mamaroneck. However, that is slated to be done in a year and a half, if all goes well. In the meantime, the closest children's museum would be Stepping Stones in Norwalk, CT. It is a bit of a drive (30 minutes) on busy I-95, however, a day can be made out of it as there is an amazing aquarium in Norwalk, as well.