Rabbit manure is
prized by Gardeners as just about the only manure, besides earthworm castings and perhaps sheep manure which can be added DIRECTLY to the garden with no concerns about being too "hot" with nitrogen.
A quick search of the Soil forums at GW will reveal that Starbucks coffee ground raids are commonplace, under a corporate program that requires local Starbucks stores to give spent coffee grounds to anyone who asks for them. Bring a bucket.
Coffee grounds, orange peels, manures, newspaper, straw, etc. etc. make fantastic layers for lasagna gardening and making compost.
Coffee grounds (along with spritzes of citrus oil, derived from the orange peel) are also documented to discourage fire ants from staying in or moving into garden beds.