To make Christmas light balls, you will need: 1. A plastic or Styrofoam ball, preferably white or green. 2. A string of Christmas lights. 3. A drill or hole punch. 4. Glue (optional). Here are the steps: 1. Drill or punch holes into the ball, leaving enough space between each hole for the lights to fit through. 2. Feed the lights through the holes, being careful not to pull too tightly so you don't break the light bulbs. 3. If using glue, apply it to the base of each light to secure it in place