Any activities for young kids in Hunter Mountain/Tannersville area?
Bailiwick Animal Park is a fun zoo, great for kids as long as you have realistic expectations (it's pretty small)
Riding the ski lift to the top of Hunter Mt. is fun for all.
Watch the kaleidoscope show at Emerson in Mt. Tremper (kids are free!)
Kaaterskill Falls - the walk to the viewpoint from the top is quite short and kid-friendly
Colgate Lake is great for swimming
North-South Lake has swimming and boat rentals
You can check if the swimming pool at Camp Sharon is open for pay to outsiders on Friday with separate hours (some years yes, some years no)