Make a Movie
My sister has three kids and asked me to watch them for a week. It was a big joke. Me with three kids?
We made a movie. I let them do anything they wanted to do, filmed it, then intermixed it with them complaining about me not letting them have any fun while they were staying with me.
Their mom loved it, and they had a great time making it!
All you need is the seed of an idea. Kids can grow seeds into big ideas. What do they like to do? Do they like making things? Do they like animals? Let them be the host of their own show, and you can be the videographer. Interview them about their family.
There's a reason there was a show called 'Kids Say the Darndest Things'. They really do!