Several years ago I found a set of blue silk curtains at a thrift store for a couple bucks per panel. Of course I bought them! Who can pass up cheap silk? Not me!
I brought the curtains home, and being in "This is what I do with thrifted stuff" mode threw them in the washer. Of course this changed the texture of the silk. Whoops. I shouldn't have done that! Oh well, it was still nice fabric and still usable, and once it was washed a folded it up and stashed it away with the rest of my silk stash to be used "some day" for a yet to be determined project.
Sometime around getting engaged, or possibly before that, I don't really remember when, what that project would be was determined. The curtains would be turned into a petticoat. A blue silk petticoat to be worn under my wedding dress over my hoop skirt. My "Something Blue". (The hoop skirt would be my "something borrowed" and I had plans for the "old" and "new" as well!)