We're also doing a regular paper advent calendar with Starboy
This is the part that makes all of this book and activity stuff a little over the top. Or is it the other way around. Ideally the pictures in this would relate to the activities, and not be a whole separate thing. Shrug. Not this year.
Starboy doesn't know what all of the numbers look like yet, so I write the day's number and then he moves it around to locate a match. The "teen" days have tripped him up; other than that he's good at finding the matches.
Rhythm of the Home did a great article last year on making your own calendars. When you see it, you'll go: "Duh." But it's worth checking out.