Here are three ideas..
Ribbon With Clothes Pins
Nail ribbon onto wall, clip on pics.
Old Chair Spring
Found on the curb, I rolled and old chair spring up like a sconce.
My husband and I share an office with a chalkboard wall, I always try to change it once a week .
Hope this was able to inspire some photo decor in your home. And maybe soon PostalPix will create their own camera app.