I stopped at a couple of nearby Starbucks to ask about used coffee grounds. I'd given up on them before because every time I went, their response was that somebody had just picked them up.
Well, THIS time, the answer was that people used to come by all the time during the summer but they haven't been lately, and the manager apologized that they haven't been bagging them, not expecting them to be picked up. She said if I call the day before, she'll have them ready for me, so told her I'll be back the next day. K'ching! At the other store, they also said the same thing! Lively pick-up during the summer, NOBODY picking them up now. K'ching, K'ching!
Needless to say, I also took what they had at both stores.
My latest project/experiment: "Espresso" Oyster Mushrooms -- oyster mushroom spawn in sawdust that is mixed with used coffee grounds to run the mycelium and grow the mushrooms. I'll start a new thread about it soon.