do a tug test and see if it 's strong enough- if it does not break when you hold a piece between your two hands and give it a tug you can use it to piece- to do hand work- to quilt with- for what ever you want-
if it does break it's probably not strong enough for basic sewing- donate it to a school art department, scout troop, 4-H'rs...kids are very creative with things like that.