I started by scanning the photos and resizing them to fit the small box areas. They were each printed on matte photo paper and mounted onto scrapbook paper that has the weight of card stock. I didn't use glue. I used that sticky tape that rolls out of a dispenser because I didn't want the liquid to bend the photo. The decorative paper was trimmed to make a small frame around the edge of the photo and then the finished pieces were propped to stand in the openings. Quick and easy!
I had a lot of emails after posting this cubby the first time. For anyone still wondering you can get it at the Pottery Barn online. It comes in a lighter finish too.