There are people who can use the fabric if you don't want it. Donate it to the Charity store of your choice. I made my kids poly cotton quilts back in the 70's and they got loved to death. They washed up well, kept their colours and lasted. As long as you put like materials together, you won't have any problems.
You could also make them into pet beds for the shelters. The clothesline fabric bowls are another use for fabric of questionable content. I made a nice basket out of a Rayon blend. You could cut it into strips for crochet rugs and shopping bags. As you can see...lots of things to use it for.