I have been giving by buyers a housewarming party, I have them invite there family and friends. I will provide hamburgers and hotdogs and sides. I have found that not only do the new homeowners love the idea and can seem to thank me enough, the business form others who attend more then make it worth my time and money. I will spend and average of 200.00 dollars and pick up 2 or 3 more clients. This has been a great ROI. If you have a chance, try it on your next sale. Another way to help even more is to offer the same idea to the buyers of your next listing after the closing. In most cases I have found that the agents who had the buyers for a listing of mine, seldom follow up with them.