Using these Christmas decorative balls is easy. You can simply hang them on your Christmas tree to add a festive touch. For DIY projects, you can use glue to attach them to a wreath or string them together to make a garland. When handling these balls, be gentle as they are made of plastic and can break if dropped from a height. To keep them looking new, you can wipe them with a dry cloth occasionally. Store them in a cool, dry place after the holiday season to use them again next year.