I'm giving my son a classical education with it. Using Retropi
Every now and then we play "Daddy's games", so he has NES megadrive, and MAME (PacMan mainly). As he starts to master those, I'll add the next generation to it. If we've played some of the same games, hopefully it gives us some form of common framework, and him an interest in how he could code something similar i.e. a gateway in to computers. If he decides he doesn't like it, that's fine too.
So far it's goign well - we set off on the adventure 6 months ago when he was 4. I'll also get another microUSB card and try trhe same with my daughter when she's a bit older (currently she's 2).