Yesterday I unearthed fabric at home that had been sewn into a large backing -- just perfect for a quilt I have that is ready to be sandwiched. It had been pre-washed and pieced. The fabric is a wide floral stripe designed by Sharon Newman for Moda in the 1990's. I do not remember where I got it, but it was not my handwriting on the dimension paper pinned to it. There will be enough for a remnant of several inches on the selvage edge, so that I can donate the remnant to the Texas Tech museum for their collection of Newman fabric (she was a local quilter and designed a some reproduction fabric).
I honestly think that everything I need comes my way. Keeping that in mind reduces my stress level about securing materials and keeps me away from stores (most of the time).