I use muslin all the time. I got a bolt of the permapress stuff just for the pillowcases I make for the children's pillowcases. Add fabrics leftover from the quilt for the cuff and accent strip and add their name to the cuff. Have also used good quality muslin in my quilts if that's what I need. There are some very thin muslin out there you have to be careful to watch for as it seems to be almost see thru, shreds terribly too.