Privacy.
Learning how to get better at critical thinking.
I study rhetoric and argumentation for fun. Rhetoric is for understanding how people persuade me, argumentation is for understanding the tactics they use to achieve that goal. I've developed a certain style of rhetoric and argumentation that I like a lot. Essentially, I think people should learn to identify their own assumptions and make them explicit. Far fewer misunderstandings would happen if people know wtf they themselves were saying.
Linux
Working from home.
Honestly I can't narrow it down to less than 2:
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Australian Stingless Bee "farming": as the hobby is niche, even in Australia, there isn't much publicly available advancement in hive designs, propogation methods and care techniques for native bees. This makes the barrier for entry high, and the chances of losing a hive when inexperienced is moderately high too. More people in the hobby would hopefully bring in more discussion and experimentation, and make the hobby more accessible to others by hopefully bringing the price of hives down.
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TTRPGs/Wargaming outside of the big 2 games: if its not 40k or D&D, you are unlikely to find anyone that knows of alternate systems, let alone wants to play them. Makes it a lot harder to find a group outside of a game over discord or similar
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Radio control airplanes. It's being regulated to death since the advent of quadcopters/drones.
This is going to seem odd because a lot of people are surface level into it but if you actually get into it you'll see it's very difficult and most people will tell you that you're wrong. This hobby is game design. It's incredibly hard but everyone thinks they are a master at it. The moment you start building something you see that all of your designs are very basic.
Meditation
Everything I do is pretty nerdy, I just wish there were more women, gaming, chess, progamming, etc.
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Privacy
Protects one of your fundamental rights, or nearly all of them if you think about it, as well.
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ham radio
Getting certified is super easy in many places and there are many hobbies within, such as electronics, building antennas, etc.
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poetry
This hobby has to be the cheapest of all. Go to the park with a pen and paper, bonus points if you leave your phone at home, and let your mind wander :)
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