If you're not already a member of Freecycle, I highly recommend it. Go to Freecycle.org to find a group in your area.
Basically, people clean house, or get cruddy gifts, or whatev, and then send an email to the group (it's run via Yahoo! Groups) saying "Offer: Crap - Anytown" in the subject line and then listing details about the item(s) in the body of the email.
I scored another big box of fabric from there this morning. There was a lot of crap, but there were several pieces that were at least a full yard in size, which actually match, so eventually I can make an *actual* quilt. For realzies.