Dumb, cheap phone for kid?

Hey folks, my wife and I use Pixel phones, but we're starting to think about a phone for our kid, really just to be able to call 911, probably wouldn't even get data. We're looking for cheap and boring, the fewer features, the better. Also open to smart watches, tho we have no experience with them.

Are there any devices that fit the bill? I'm thinking something like an old Nokia brick from 20 years ago, but of course with VoLTE/VoNR.

Thanks for any help this community can provide!