A Christmas elf is a magical creature that lives in the North Pole and helps Santa Claus prepare for Christmas. They are usually small, with pointy ears and a jolly attitude. They wear green and red clothing, and they have magical powers that allow them to make toys, decorate Christmas trees, and perform other tasks related to the holiday. Some Christmas elves are also known for their mischievous behavior, and they are often depicted in popular culture as causing trouble for Santa Claus.