...but I just thought of a few more by boat (much nicer, in my humble opinion).
Braun Bay (hope this doesn't cause an argument).
Blueberry Island. You can anchor off the north side of it and swim in to the beach. It's blueberry season too, so bring your buckets. I also heard a rumor that there are nesting Bald Eagles on it but I haven't had a chance to confirm it.
I second Sally's Gut...very cool. Kids will (should?) get a kick out of it.
Town Docks in Meredith for ice cream by boat or the Red Hill Dari in Center Harbor or Bailey's in Wolfeboro. Think I like ice cream?
That's all...for now!
