Most pillow cases are 19″ wide if not wider so these are ideal for making Scrubs Laundry Bags. (SLB). There are some great designs and most of the stitching has been done for us.
Turn pillow case inside out and measure 56cm from the bottom and cut. Set top pieces to one side.
Unpick stitching down each side 13cm, pin edges back and stitch. Turn top edges down 1cm and then again 3cm to create a drawstring tube. Thread tape or string through both pieces twice and knot one end if using 1 x 200cm lengths or two knots (one either end) if using 2 x 100cm lengths.