These are quite cute and seem very easy to create, even if you didn't use the program from Tabblo. They could make great centerpieces, fun accents, or whatever. Favors even. Create a free user account at Tabblo, upload 5 photos, then download the pdf (adobe acrobat file), print, and cut out.
Go to Tabblo for your free account and to start creating your photo cubes.