Custom Photo Display Collage -- this one uses wood blocks, but I bet you do also do this with that foam core stuff if you wanted something lighter weight. It would be cute with colorful photos and ribbon for kids' rooms, too.
Cute way to track pregnancy if anyone is expecting... I'm not ... But if any one is it would be cute... Especially if you were to have a black dog like the one in the pic...ahem!... Sorry just clearing my throat ;)