Here’s a no-fuss way to display all the holiday cards that arrive in your mailbox each day. And don’t worry: Washi tape pulls right off the wall without damaging the paint. What to do Use a pencil and yardstick to mark the three points of a large triangle (ours measures 5 x 3¼ feet). Apply ¾-inch-wide washi tape, as desired, to create the tree outline, and add a trunk that’s centered at the bottom. Use removable mounting squares to hang the cards and a sparkly pom-pom on top.