Minecraft. Redstone and commandblocks. Later set up a server that allows for plugins to install (spigot). Then install the javascript plugin and the kids can ma

Minecraft. Redstone and commandblocks. Later set up a server that allows for plugins to install (spigot). Then install the javascript plugin and the kids can manipulate the minecraft worlds with javascript. Show them all the plugins available and they'll become annoyed with that one plugin that does not quite do what they want. And start to write their own. My 14 year old nephew is now writing a Harry Potter world with the spells and wands, in java. But the most important thing however is to keep it fun. Let the kid choose his own path. ("Eclipse?! Really?! But Vscode is.... Oh well ")