Fifty shades of green: Grýla de troll and her 13 sons.
In the Netherlands we celebrate Saint Nicholas.
And anyone who is over 40 (I estimate) remember that (black) Piet would bring naughty children in the bag to Spain.
I remember that my mother often said that she wouldn't mind having to go along at all, but as a kid I was of course very impressed.
In Iceland, they do something different: there they celebrate Christmas, and they have Grýla!