Turning a 15 years old laptop into a children proof retrogaming station

This article explains a setup I made for our family vacation place, I wanted to turn an old laptop into a retrogaming station. That's actually easy to do, but I wanted to make it "Childproof" so it will always work even if we let children alone with the laptop for a moment, that part was way harder. The packages for Retroarch on Alpine were missing the cores I wanted, so I dropped Alpine. If retroarch quits, the tty1 would be reset and retroarch started again, and you can't escape it. Grub can be a major issue if a children boots up the laptop but press a key at grub time. Its controller mapping is really smart, you have to configure each controller against some kind of "Reference" controller, and then each core will have a map from the reference controller to convert into the console controller you are emulating. Doing a children proof kiosk computer wasn't easy, I'm sure there is room for improvement, but I'm happy that I turned a 15 years old laptop into something useful that will bring joy for kids, and memories for adults, without them fearing that the system will be damaged by kids.