For batting the Warm Company, which has a plant near us, is very generous for charity or donation quilt materials. They gave us several bolts which had minor flaws or were a little soiled. We just cut off the bad parts and used it all year long. For materials could you run an ad or perhaps an article in your local newspaper asking for fabric donations? My mom's group which meets in the local senior center always gets huge bags of fabric donated because someone has died who had a huge stash. Some of it is dated, but still very useable.