I just stitch my scrap batting together using a zigzag stitch and use it in art quilts-- I've got some pieces where the batting was stitched together using pieces that were less than 1" wide---don't think it would be very comfortable for a quilt that was going to be used, but for a wall quilt, it works great and it gives me some mindless sewing to do on those days when I'm not feeling very creative but want to sew.
Rob