Santa is the Holly King, the sleigh is the Solar Chariot, the eight reindeer are the eight Sabbats, their horns represent the Horned God, the North Pole symbolizes the Land of Shadows and the dying solar year, and the gifts are meant both to welcome the Oak King as the sun reborn and as a reminder of the gift of the Holly King who must depart for the Oak King to rule.
Make your own stories for your children, write them down, incorporate these representations, and your children will remember them always.