I don’t know where you live, but if you have a Hado arena nearby, then a taster session might be a good gift. It’s an augmented reality sport which can be played casually or professionally. There are arenas all over the world.
Unfortunately their world site is a little out of date. I know quite a few kids in my area of the UK, at around that age, who are getting into it.
Take your pick from the Linux family tree