We found an old wooden U.S. map puzzle at a garage sale but they're also readily available at Teacher Supply stores and even warehouse stores. I prefer ones that have each state as one puzzle piece, but usually they'll at least group Massachusetts, Rhode Island and Connecticut together. When my son was 2 1/2 he really enjoyed playing with it, so we left it out on the coffee table. He'll bring me a few pieces at a time and ask me the name.
