Depends on what you goals are other than being good with kids.
Do you want good consistent egg layers that are also kid friendly
or do what kid friendly, that also lay eggs, but maybe not consistently?
The kid friendly chickens tend to be the ones that go broody easily, as well.
Agree with above breeds, that all also come in bantam sizes if you want a smaller chicken. I can add silkies as kid friendly and cold hardy as well as very nice to pet with their silkied feathers.