It struck me a few days ago that it was nearly December, I didn't have an Advent calendar, and the ones with tasteful pictures are expensive while the ones with cheap chocolate are horrible. So I set my powerful intellect to the problem of something seasonal, easy to construct in a short timeframe, and cheap if not free.
This is what I came up with.
Yes. It's a stick with 24 nails hammered into it. Every day, I get to hang a tiny ornament (of which I have many) on a nail, thus marking the passage of December.
Helps defend those Christmas presents from burglars too!