Neighbors helping neighbors....when a neighbor helps another neighbor is just a simple thank you enough or do you reciprocate in some way, with either baked goods, or helping them in some way, etc?

We were doing some yard work, removing debris from a tree stump, a very time consuming and tough job, when a new neighbor came over with his shovel and rake and just started helping us. He cut the work in half. I plan to take him over some goodies, what would you do in this situation?