While I'm a bit too young to have used one in school, my dad did give me his slide rule from when he was a student. It's one of my most prized possessions, if only to show how far humanity has come in terms of computing devices.
But really, if you want to get your hands dirty with some practical electronics, and also want to be able to communicate without relying much on nearby infrastructure, amateur radio is a great hobby.
Recently I've managed to port the game onto a real-world cyberdeck, the uConsole. [1]
[0] https://store.steampowered.com/app/3627290/Botnet_of_Ares/