I am sure most of you are used to the German promos we see during the Christmas Holidays ever year. :D
So I am listing two which I found.
Computer Bild Calendar http://www.computerbild.de/cb-adventskalender-interaktiv-6581215.html
PC Welt Calendar http://www.pcwelt.de/special/XMAS-Kalender-1388941.html
If you find more please share them here :)