My son was three when I bought my first computer in 1996. He was with me as I opened the boxes, took out the parts, and plugged everything in, etc. It all booted up properly straight out of the box, I was so happy and relieved. I had to leave the room for a minute so I opened Paint.exe and let him have a go at it. What could go wrong?
When I came back, maybe a minute later, he had somehow opened C:\ and had grabbed the AUTOEXEC.bat file with the mouse and was moving it around the screen !!
O. M. G. !!! LOL 🙂
When he was older we never got him a video game system. Eventually we found he was missing out on a social part of life with the other boys, so we relented a bit. We created a system for him to earn money so that he could eventually buy his own game system. It took a while, over a year I think, but he eventually earned enough, supplemented by Christmas money, to buy his first Wii game system. He was pretty happy obviously.