I got my child an AppleWatch SE (a few years ago), which yeah, technically has a bunch of apps but they're not really useful or of interest to them, and if they don't have social media accounts (which mine don't), then it acts as a phone and locater without all the rest.

On the downside they kept begging for a phone so they could text their friends, which was reasonable, and texting on the Watch is a terrible experience. So we finally did give in to a phone but with locked down parental controls, so they can't install apps, etc. (though I'm finding those iOS parental controls don't work as well I had hoped; there's a huge issue with them being reset suddenly -- lots of forums of people complaining about this).