Ask HN: Best Linux distro for a young kid’s first computer?

My 3 year old told me the other day that they want to be able to push buttons like daddy does at work. So now, ridiculous as it may be :D, I am working on repurposing an old desktop into their first computer. The idea is mostly just to teach them to use a mouse, keyboard, and maybe play some simple games.

At the moment, I am planning to install a lightweight Linux distro as the OS. Has anyone done anything similar? Any recommendations on a kid friendly distro? I am leaning towards using Elementary OS at the moment, but I’m not sure what else I’d put there.

Thanks internet friends!