Seedfork, I can't believe I didn't think of that. I work for the sanitation department. I get paid to pick up leaves in the fall.and out of all of the junk that I bring home from work it never even occurred to me to bring home the bag grass clippings.. I don't mind the big seeds it's all the little ones..
For some reason I just can't bring myself to go in Starbucks and ask for coffee grounds. I save the ones at work about 3 to 4 pots a day.