First, have your uncles sneak into the town dump and haul out a used 250 gallon heating oil tank. Then have your neighbor cut it in half with his arc welder. Buy them all a case of Genesee Cream Ale.
Order a crate of lobsters from a local lobsterman. If you invite him to the clam bake he will probably give you “boat price.” Call up some cousins and friends to help with the clam digging and wood carrying. Borrow Dad’s pickup to haul a couple of loads of scrap wood from the neighbor who has the saw mill.