Get a trailer and drive sround, gathering the grass clippings idiots bag up and put at the curb and you can get lots of compost. That's what you used to be able to do in Dallas, anyway. People put fertilizer on lawns, the lawns grow like crazy, they water, they cut, bag and send all that fertilizer-rich grass to the landfill. Then they start all over. Disgusting! Well, obviously I'm not really advocating that you do that. You don't have any idea what else they've done to their lawns. But the elementary school in my neighborhood has a "farm" where the kids grow all kinds of things. I have two pecan trees that drop tons of leaves each fall. A lot of those leaves wind up in the compost at the school. I've been a Master Gardener for 25 years. I didn't start out doing things the organic way, but that's the way it evolved. Good luck to you.