Composting is the easiest thing one can do to help your community. With a wealth of good soil you, your neighbors, and everyone else is stuck with the predictament of what to grow. Imagine such a world.
The problem is that the standard composter doesn’t turn itself, and the average human is too everwhelmed with life’s callings to take the time to turn the composter once a week.
Hence the self turning composter, wind powered so no additional power is needed.