I have been give many bags of fabric, and some of the fabrics were just pieces of stuff I would never use in a quilt. Those I tossed. Some of them, while being all cotton, were simply not my style or downright ugly. I cut all those into squares to use in utility quilts. Some of them were cotton blends, denim, corduroy, etc. Those were also cut down into squares. Larger pieces (over 1 yard) were kept and used for pieced backings for utility quilts. I have just finished my 3rd utility quilt of this winter....each one with double poly batting for extra warmth. My girls love them because they know the quilt is washable and durable. The most recent is made from extra blocks from many different quilts....it is quite a wild looking thing, but it will keep my family warm and nobody cares what they look like when they are cold. Use what you have if you can, donate what you can't and don't fret over it....just not worth the time.