We've asked you What's On Your Refrigerator Door? before, and though we personally prefer a clean door, our baby loves looking at photographs on the fridge so these mini magnetic frames seem like a good compromise.
Choosing just one color frame would also keep it simple. Reviewers over at CB2 do say it's a smaller frame than you expect, and therefore a bit harder to find pictures small enough to fit inside.
Another idea is to print photographs on magnetic paper you can find at an office supply store, and just cut them into squares.
Any other ideas for the fridge?