Glass Christmas balls are a classic holiday decoration. There are many ways to decorate them, including painting, glittering, and adding trinkets or charms. You can also tie a ribbon or string around the top of the ball to hang it on a tree or wall. Some people even fill them with small pieces of paper, which they can write wishes or messages on. Whatever you choose to do, glass Christmas balls are a festive way to add some extra sparkle to your holiday decor.