With a box standing upright, make a pencil mark on the edge of the box, five inches (12.7 centimeters) from the bottom. Draw a diagonal line to the opposite top corner of the box. Draw a matching line on the opposite side of the box.
Cut along the lines and remove the top of the box.
Wrap the box in wrapping paper or comics. Glue or tape in place. Your National Geographic Kids magazines finally have a home.