Do you make Artist Trading Cards (ATCs) with your students? Print out this sheet and affix it to the backs of your cards. Then they will be ready to send off in swaps to other schools.
Most of my students did not decorate the backs of their cards, so they will glue on the larger size backings. Some of the kids who made designs on the back will want to choose the smaller size, so that is why I made the backs in two different sizes.