Remind your child who has been acting up (or naughty) that Santa and his elves are watching with this Naughty List Notice FREE printable. Santa Letters Addressing Concerns.Click any Letter from Santa to see a larger version and download it. "Dear Santa, Starting today I am going to behave. With this magical Santa letter, you can edit it so that it says your child's name on it. This printable letter is best given before Christmas. You see, I know you can do better and that's why I am writing to you. Start your letter with a personalized greeting from Santa himself. Write "Dear" and your child's name. Browse our template gallery for an example of how to write a letter to Santa.