One of the ways I use fabric from stash is to let the amount of fabric I have determine what size the quilt turns out. I had three fabrics that just belonged together. But there was only enough to make a throw size quilt. So it was a throw size quilt. I have several that just belong together and they'll come out whatever size I can make with the fabric I have. I don't try to add fabrics just to make it bigger or add sashing to make it bigger. They come out whatever size the fabrics dictate.