Photo Mosaic Postcard

Use some of the pictures you have taken and turn them into a mosaic postcard by cutting them up and adhering them to a sturdy 4x6 backing. You could get crafty if you want with a bit of stamps/paint/washi/whatever but you don't need to. Tell your partner on the back a little about the pictures, address it and add a stamp and send it off. This should be an easy and fun swap and not take too much time if you use photos you already have.