Stringing popcorn for a Christmas tree is a fun and festive activity that can add a homemade touch to your holiday decor. To begin, you'll need to pop some popcorn and string it on a long piece of thread or twine. You can use either a needle or a fork to help you string the popcorn. Once you've strung the popcorn, you can hang the garland on your Christmas tree. You can also use popcorn to decorate your tree in other ways, such as making popcorn chains or popcorn ornaments.