Excellent point @pcourtnier! My local Starbucks and McDonalds give away their grounds for free everyday. In my old compost I would get new grounds weekly (I had a rather large compost bin several years ago). The one I have right now is much smaller. So, the coffee grounds I add are plenty.

But, I definitely agree with you. If you don't drink coffee and want a free LARGE supply of coffee grounds just ask your local coffee shops. You can often leave with several pounds of used coffee grounds.. if not more! Thanks again for the comment!