I will use fabric from pretty much any source, depending on the quality and feel of the particular fabric. Good stuff can come from many places. I look for quality, and won't use anything that I wouldn't use for my personal sewing. My charity group has a very large stash of donated fabric, which we are free to use. Some of the prints are very, shall we say, interesting, but my taste is not the same as someone elses, and they may find something beautiful that I don't care for.