An old tradition in my neighborhood: the people around Hazenstraat dress like angels (though I think they’re monks or the likes) and walk to the huge christmas tree at Elandsgracht, just around the corner. This is an old Christmas tradition in Amsterdam Jordaan.
The days before, they collected wishes from all in the neighborhood, written on cards that they hang in the xmas tree on the evening of 21 December, the longest night. All wishes come true! And afterwards, mulled wine, and hot chocolate for the kids. Nice! More about the neighborhood here: http://www.facebook.com/elandsgracht