Advent Calendar?

After Thanksgiving, we run over to a local grocery store that has some nice advent calendars for the kids. I've been thinking there need to be some for adults, too. I'm not the first person to think of this idea, however. Quite frankly, I like this approach for variety.

For some simpler ideas, we have the following:

Bachelor's Advent Calendar


Mexican Advent Calendar


Scottish Advent Calendar


I think more variety for 24 days is desirable, however...