If your little one has a birthday coming up soon you can sign up at the Northpole.com and they will be sent a birthday greeting from santa. Daughters birthday coming up, have just signed up. Lots of things for kids to do on this site. You can also get a free letter from santa. My daughter had great fun doing this and was delighted when she got a reply. Can't wait to see her face when she receives her birthday greeting from santa. You will be sent an email to tell you to pick up your mail from the mailroom on the site.
http://www.northpole.com/Mailroom/