Elf on the Shelf is a great site with recipes, craft ideas and games. Great animation and stories, the whole concept of the site is about the elf that visits families and reports back to Santa on whether they are naughty or nice.
Another site is Make-a-Flake. You can create your own snowflakes and share them with your friends. Take a look at the gallery. It's pretty amazing what you can do with paper and scissors.