Christmas balls are a popular Christmas decoration that comes in many different shapes, sizes, and colors. They can be made of a variety of materials, such as glass, plastic, and wood. The process for making Christmas balls typically involves filling a mold with a liquid resin and then adding the desired color and glitter. Once the resin is dry, the Christmas ball is then removed from the mold and given a final polish to create a shiny finish. Finally, the ball is strung with a loop of ribbon or string and hung on a Christmas tree.