A Christmas kissing ball is a festive decoration that is made by stringing together ornaments, berries, and other decoratives in a circular pattern. Here is how to make a Christmas kissing ball: 1. Start with a Styrofoam ball that is 6-10 inches in diameter. 2. Choose your decoratives, such as ornaments, berries, or even pinecones. 3. Take the first ornament and pierce the center with a straight pin. 4. Slide the pin into the Styrofoam ball and push it all the way through, so that the ornament is securely attached.