the primary playing surface is made from natural fiber burlap coffee bags which I collect for free from Coffee Bean International (weird that other roasters sell them you their trash). Anyways you can grab these by going out to 9120 NE Alderwood Rd and find them on the west side of the building across from the ikea warehouse.
used coffee bags provide a multitude of uses to gardeners including weed and pest control, moisture and temperature control, sheet mulching, and for growing food (to name a few)---all while being a good combonation of durable and decomposabilty.
here you can find some of my notes on how it functions for mini golf