What can you do with Apple TV for free?

I want to buy an Apple TV, but I don't want to spend later for subscriptions or anything. I know that I can beam my iPad or iPhone screen to the tv or projector or monitor, but what else can I do with it without paying for Netflix and stuff?

Nothing all you can do is like airplay phones and ipads to your apple to then to your tv

YouTube videos, content from some of the apps are available for free in some cases.

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