Free/cheap things to do in the hamptons/nj shore

We just got back from tampa 1 1/2 weeks ago and i am itching for the vacation bug again. problem is that we went WAY over our budget with this last one. I still have plenty of uncoming days off from work and i am looking for free/cheap fun things to do in the hamptons or the nj shore for the day. (no over night stay)



TIA