Wash and iron? Depends on the fabric quality. Batiks I don't wash or iron. Lesss expensive fabrics I wash and iron. I have just learned to fold fabric using my 6" wide ruler. Over and over and over, snug and straight as possible. Then fold in thirds or halfs. The stash is looking a lot neater and I can find what I am looking for. I may never get the whole old stash folded this way but it's something to work on as used.
soannesew