We've used new dryer sheets to repel mosquitos and other bugs. We were able to continue sewing on the deck during the "mosquito hour".
Another use: very well used dryer sheets can be melted (do this outside, heating puts the chemicals into the air-I suppose this is a polutant) to form a lacy mesh, then painted to embelish wall hangings. Melted poly is stiff, don't use on clothing or bed quilts.