The Elf on the Shelf costume is one of the most popular Christmas costumes out there, and it's not hard to see why. It's a fun, whimsical look that brings the magic of Christmas to life. Plus, it's easy to put together at home! All you need is a red and white striped suit, some pointy elf ears, and some little elf shoes. You can even add some elf accessories like a magic wand or a toy bag.