I live in suburbia and don't have a large yard to generate a lot of compost material. As I wanted to step up my compost production, I got crafty about finding alternate sources of material for my pile. I wanted to share some free sources of compost materials and was hoping other people could add their resources as well. In my 6 mo or so of composting, I have found the following great sources of materials to add to my compost pile:
Make friends with your neighbors - I get their grass clippings and fallen tree leaves. I do ask if they use weed killer chemicals on their lawn though as I don't want the residue in my pile.
Coffee grounds - I get them by the trashbag full from the local coffee shop. The Starbucks employees benefit because they don't have to bag the grounds into the 5lb foil bags, I just take the whole lot for them!
firewood guy - he has a lot of wood bits around from splitting logs. I asked him if he could bring this by with the cord of wood he delivered. He was surprised and happy to get rid of it.
Old Christmas trees - Not sure yet if the 10 trees my fiance collected will be in a separate pile or added to the existing ones, but these are plentiful right now. You will need a chipper though (which we just picked up today - Yeah!)
I don't know anybody with horses or cows, but if I did I would be asking them if I could have some manure.
I heard some people get rabbit droppings and hay from animal rescues. My guess is that they would also happy with a way to dispose of the waste.
Any other ideas/suggestions would be appreciated!