Starbucks used to be a great place for used coffee grounds. Now it seems that they can't be bothered to save them. I've spoken to most in my area. Most of that group specifically told me they won't save them. The few that did, it wasn't much and made the stops like playing shot machines. They just said they were busy. I got lucky a few years with two. Staff changed and now they have dried up as well. My local coffee shops and doughnut places either won't save them, or have someone picking up all of what they save. So... I'm still looking. Good luck in your search.
