How about a way to use masses of wood scraps to create small amounts of fertilizer?
The Mulch Pile would be built similar to Coal Piles. Lots of wood scraps, and require some other organics as well. Maybe some dirt or logs.
Over time the mulch pile would degrade, creating fertilizer.
Fertilizer could be used to enhance the growth rate of crops, grass, trees, bushes, etc.
Viola! A viable use for the incredible masses of wood scraps that most of us generate.
Side benefit: Less server side cleanup of hundreds of thousands of wood scraps that are never used for anything.