Pillow cases. Pillow cases, as well as being cases for pillows, are strong-seamed bags in a retro style, lacking handles. In other words, they’re unfinished tote bags – chic crusaders against the nuisance of urban tumbleweed. So at the end of their bed-life or sofa-life, upcycle them into the latest in supermarket fashion – and let Instructables lead the way.