Once you digitize your images (either by taking pictures with a digital camera or scanning printed photos), the world is full of fun ways to use your photos.
Including postage stamps!
Stamps.com is an approved vendor for the U.S. Postal Service. The stamps you create can be used like real postage stamps to send mail.
Consider this project for wedding invitations, graduation announcements, party invitations and gifts for avid letter writers (yes, some people still write handwritten letters). The stamps ship in about a week.
This vintage image became a great gift for a mom on Mother’s Day (excuse the quality — this is a screen grab):
Of course, you can use full-color images, too.