What did/ do you do with your older LO (s) during doctors appointments, especially prenatal ones when there are so many?

So far I've brought C to my eye doctor and dentist appointments- both had said it was fine before she was even born. It's definitely getting a little harder as she gets older but I can usually make do between snacks and Daniel Tiger on the iPod.

I SAH so no child care, and no family in the area who could watch her.