IRL, children spend their time running around and getting hurt. I’d love for them to sometimes fall or get hurt while playing, ending up with scrapes or bruises. They could have band-aids on their scrapes, which would disappear after a few days.
Also, when they’re at school, I’d like the school to sometimes call to let us know they’re sick. We would have the option to let them leave school and come home. Or the school could inform us that there’s an outbreak going around, and we would have the option to bring them home to protect them. If we decide to let them stay at school, there would be a risk of them coming back sick.