Reminded me: what can I do with used coffee grounds (other than dump them out the window on some plants)?
Grow mushrooms on them?
That was the one thing I already knew about but it's not really feasible in our place. I was thinking something along the lines of making potting mix and giving it away or something like that.
@ffm started
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Reminded me: what can I do with used coffee grounds (other than dump them out the window on some plants)?