earlylatetwenties's Profile

Have a wide-format print shop enlarge and print a pair of photos (or patterns, illustrations, etc.) on vinyl. They can mount it on a light, inexpensive substrate like thin, corrugated plastic and you can attach it with velcro or even looped masking tape. Look for places that advertise vinyl signs.

For that matter, you could wallpaper a thin substrate and do the same thing.