Frame them. Make a collage with them. Mod podge them. Make a photo or scrapbook with them. Love vintage post cards!
I would make place mats by placing them on construction paper and covering it with contact paper, trim with pinking shears, OR place on a table or counter and cover with resin, OR save in albums.
Framing them would be cool, you can also cut them into circles and bend the edges back so they are shaped like a triangle, then glue the bent edges together in a sphere shape for a christmas ornament or a cool thing to hang in your window. You can decoupage them onto a tray or a table top or on the outside of boxes. You can cut a circle shape out of the picture and put it inside a clear glass ornament.
Frame them - put them in an album
Decopauge them onto a desk
Make a wall border.. maybe in order u got them.. u could make pockets that they would fit in all around home, have them all laminated n then u could put em pockets n still read em or move em as u please!!