The tradition of Saint Nicholas Day, usually on 6 December, is a festival for children in many countries in Europe related to surviving legends of the saint, and particularly his reputation as a bringer of gifts. The American Santa Claus, as well as the Anglo-Canadian and British Father Christmas, derive from these legends. "Santa Claus" is itself derived from the Dutch Sinterklaas.
Traditionally, in the weeks between his arrival and 5 December, before going to bed, children put their shoes next to the fireplace chimney of the coal-fired stove or fireplace. In modern times, they may put them next to the central heating unit. They leave the shoe with a carrot or some hay in it and a bowl of water nearby "for Sinterklaas' horse," and the children sing a Sinterklaas song. The next day they will find some candy or a small present in their shoes.
Typical Sinterklaas treats traditionally include: hot chocolate, mandarin oranges, pepernoten, letter-shaped pastry filled with almond paste or chocolate letter (the first letter of the child's name made out of chocolate), speculaas (sometimes filled with almond paste), chocolate coins and marzipan figures. Newer treats include kruidnoten (a type of shortcrust biscuit or gingerbread biscuits) and a figurine of Sinterklaas made of chocolate and wrapped in colored aluminum foil.
Poems can still accompany bigger gifts as well. Instead of such gifts being brought by Sinterklaas, family members may draw names for an event comparable to Secret Santa. Gifts are to be creatively disguised (for which the Dutch use the French word "surprise"), and are usually accompanied by a humorous poem which often teases the recipient for well-known bad habits or other character deficiencies. (From: Wikipedia)