The Advent calendar is a beloved tradition for Christian children all over the world. Here are links to online Advent calendars and resources about the history of the tradition.
Artcylopedia Advent Calendar: Each day features a different classic work of art depicting an element of the Christmas story, with the Biblical background. Recommended.
The Perl Advent Calendar: What do Geeks want for Christmas. A daily coding tip for each day of Advent. Couldn't resist including this one for the Christian geeks, as I count myself one. :)
