Advent Calendars from delicious site - I think I mentioned some of them in earlier posts.
Teaching Mom Calendar - It contains suggested books to read for each day.
Woodlands Junior School Advent Calendar - This contains a quiz for each day of the calendar.
From the Episcopal Diocese of Washington, D.C. - dated 2007
Advent Calendars for sale. - A little late but fun to look at anyway.
The Flickr group of advent calendar pictures
Primitive Art Advent Calendar created to for charity.
From Liverpool Museums
Want to create your own calendar? Use this PowerPoint template. Let me know how it worked.
A Ruby calendar - The software, not the jewel.
The Perl Calendar - [via]