We typically keep the kid's door to their room open at night.
However, when Finn wakes up in the morning (and she is always the first up).
She will walk to the door, close it, and then start knocking on it.
I'll then hear on the baby monitor, "Hello Mommy. It's me, Finnley. Mommy? Hello Mommy"
Haha! And then I come to the door and open it, and with a big happy smile she looks at me and says, "Good morning, Mommy".
What a great way to start the day