Check out this sweet Instructable to create your own. A case of Sam Adams' Winter Classics would do the job nicely! (Please do not use PBR like the picture shows ... that might make me cry.)
|24 days before Christmas, 24 beers in a case. Coincidence? I think not.|
Here are the instructions: http://www.instructables.com/id/beer-advent-calendar/
A big thanks to Instructables member mikeasaurus for posting the idea and my buddy Keith the Gecko Wrangler for letting me know about it!