One of the simplest ways to embody a Halloween character is to toss on a mask. Kids probably won't have the steadiest hands for applying makeup, and masks are a quick solution for creating an effective disguise. Parents may have to make a trip to a specialty costume store to find masks of specific characters or order them online. Depending on what a child wants to dress up as, he or she could construct a mask from scratch, too. And once a kid stumbles on the perfect Halloween mask, the rest of the costume should be a piece of cake.