Rayon Fabric Scraps

I haven’t had the chance to drop by Goodwill. But, I thought I would ask if anyone has some Rayon scraps with which I could practice embroidery/appliqué? Ideally the Rayon scrap/s is/are thin and stretchy - more shirt stretchy than say pant stretchy.

A bit back someone donated a few bolts of fabric and I think some of it was stretchy stuff. Not sure. But I think @Kriskat30 might know what became of it