The way she does it is to make cards with fun things to do every day in December and put them in envelopes to make it surprise-like. Then each evening one child gets to open the envelope for that day, and they do that fun thing. It might be to go light looking or watch a movie.
The important part is that it’s an occasion for you to chill together and have some fun at Christmas time.
It is free to download and print. The package includes printable cards, labels, ideas for family activities, blank cards to make your own and a chart to track it all.