Yes, I've done it. Both with fabric and with paper. Fabric wears better if they are to be pulled in and out regularly. Wall paper is OK if not. With both I used Unibond to stick it, applied with a paintbrush, but if the fabric is thin you need to take care not to make it too "wet" with the glue. I have also painted them. Emulsion is OK again if not in regular use but egg-shell paint if they are.