In the February Issue of Martha Stewart's Living magazine, there's a long article with photos (see: below) about a very talented gal that makes scrapboxes. You can also find out about them on Martha Stewart's website. I had to try creating one and bought several on an online site (they also have them at Michael's Crafts).
My box is 8x10 but they do come in other sizes. I printed a photo of Gabby and glued it (around the edges) to the back of the box. Then printed some letters from my stash and mounted each on a piece of red paper (for sturdiness and color), and staggered them with small pieces of foam to make them 3-D (there are actually 3 different heights but the camera didn't catch that). Finished it by gluing one of Gabby's favorite catnip mice to the bottom of the box. Simple and quick to do!! And it looks cute hanging on the den wall. Boyd would have liked it!
Here are the pages from the issue of Living about scrapboxes. The photos in the article are small but try clicking on it and see if it enlarges. Sometimes they do and sometimes they don't!