But if you want to do prop-drilling then the advice from the React team is that Redux shouldn’t be used just for that. (Context API is the suggested approach).

FTA: “If you're only using Redux to avoid passing down props, context could replace Redux - but then you probably didn't need Redux in the first place”

I use Redux sort of like Core Data (in iOS world) - I just use it mostly to store external data since it’s valuable to track the modifications to and morph (via reselect) specifically that kind of data.

If I ever have other local state it just sits in components. But most of the time components have no state at all.