Remove labels and clean boxes with glass cleaner and paper towels.
Squeeze out a small amount of paint onto a disposable plate. For the spider body, dip the pom-pom into the paint and test print it onto scrap paper. When pleased with the results, print directly onto box and lid. Let the paint dry.
Use the paint pen to draw eight legs from the printed body. To make a foot, dip the cotton swab into the paint and test print it. Print a round foot at the end of each leg. Let the paint dry.
In a well-ventilated work area, spray a coat of sealer over the box. Let dry. Hot-glue two wiggly eyes onto the base of each printed body. Let the glue dry. Fill the box with small toys or candies.