These are an especially convenient size for refrigerator display. Add a loving message to your photo. Size the photo to fit your choice of magnetic material and print it. Attach it to the self-adhesive magnetic surface, and trim it as needed. Make several so you can put up a magnetic photo collage on your fridge's door.
Many grocery stores offer picture cakes.
You provide the grocery store a photo, they scan it, and put the picture on the cake's frosting. It's great fun. Photos on cake. Many people simply hand over a single-subject picture, such as Mom smiling at the family reunion, to appear on the cake. But since you have digital pictures, you can do more.