If you decide to make a career out of defacing postcards, you don’t have to confine yourself to antique cards with a paper finish. You can always stamp modern postcards, which have a shiny, slick surface. Collectors call these cards “chromes,” short for Kodachrome.

Caption on the back: “A Washington state ferry navigates Harney Channel in the San Juan Islands.”

The ink on a modern postcard (or a photograph) will never completely dry, though you should be able to color it with markers after a few weeks.

This baseball player is a particularly useful little guy. Here he is on a card from the 1920s:

He’s also good for standing upside down, dancing like no one is watching, holding onto objects while being blown sideways, and chasing through space.