I had a simple Radio Shack RC car when I was young. When it started to wear out, I took it apart, hoping I would be able to improve it. It turned out to be near

I had a simple Radio Shack RC car when I was young. When it started to wear out, I took it apart, hoping I would be able to improve it. It turned out to be nearly pure analog circuitry, and I didn't know where to learn more about analog circuits, so that was the end of that. When I grew up, I got my kids similar cheap RC cars, but when they broke, this time I replaced their circuitry with ESP8266 D1 minis with the D1 motor shield. I 3D printed new shells, added lights, and used PWM frequency variation to play music through the motor windings. I made a simple app that controls the cars over wi-fi. My kids loved them much more than the original. It didn't take much effort because the tools are all much easier to use today, but I'm rather proud of my little accomplishment. I turned a mildly sad childhood event into something really fun for my kids. I turned the nostalgia up to 11. ;-) So if you're looking for some way to do something nostalgic and fun, find a way to make something you've always wanted to make, then give it away. The project isn't really complete until someone else enjoys it.