If you put a call into your local hospital, nursing home, and tell them you are looking for bath blankets that are to the point of being replaced with new, they will save them for you. They usually don't "wear out", they "stain out". We did an Easter play and for backdrops we painted sheets with scenery pics, etc and all were donated by our local NH and hospital. Also, I've been told motels get rid of sheets every so often and will donate them. A phone call is all it'll take. I also pick them up at goodwill.