Frosty the snowman:
http://learnenglishkids.britishcouncil.org/en/word-games/christmas-1
http://learnenglishkids.britishcouncil.org/en/word-games/christmas-2
http://learnenglishkids.britishcouncil.org/en/short-stories/the-snowman
http://learnenglishkids.britishcouncil.org/en/songs/santa-santa-high-the-sky
http://learnenglishkids.britishcouncil.org/en/songs/the-busy-elf
http://learnenglishkids.britishcouncil.org/en/short-stories/santas-little-helper