Nisser (in Norway & Denmark), Tomtar (in Sweden) or Tonttu (in Finnish) are the elves of folklore that Scandinavians have loved for generations. Yours will bring your family good fortune in the coming year if you remember him with a Christmas Eve treat.
Xmas gnomes - In the Scandinavian tradition, the gnomes live under the floor boards and help out farm animals and humans. But if you annoy them, they can play tricks on you. On Christmas eve, many Scandinavians still put out a bowl of hot porridge on the doorsteps for the Gnomes to enjoy, to keep them friendly in the year to come.