When I get read to do a crazy quilt, I usually go to the Salvation Army or Goodwill store and look at the clothing. Our Salvation Army and Goodwill Stores have a "color tag" of the day. If you buy clothing and it has a color tag that was designated color of the day, you get the item for 49 cents. That goes a long way on fabric if they carry the larger sizes.
I might have to start to looking there for other times also. Also their sheets are usually only $2.