One thing I saw at East Lake that was pretty cool: sell fabricated pieces of wood from trees felled around the course in the pro-shop. At East Lake they sell wood bowls made from a tree that was taken out, and you could just as easily do coasters, candle-sticks, etc.
Rather than sell someone a plaque with a picture of the stump, why not sell them a nice set of bowls/cutting board/coasters made from a tree that they financed the removal of?