If you want to bike, the bare minimum is "any bike". It's too small? Someone else bought a BMX to have a small bike. You find one in the scrap that's rusty? Someone else enjoys cleaning the rust off and tidying up old bikes. You find one with a single working gear? Someone else busy is turning their bike into a single-gear fixie to save weight. Someone recommends you a heavy but solid mountain bike, someone else recommends you a light road bike - they are at odds, how do you choose? You ask what are the daily uses of a bike and people will tell you commuting and grocery shopping and transport, but those aren't the hobby of biking - nobody
commutes as a hobby. Hobbies are "playing with the thing" and play is personal. You ask what the point of riding 50 miles in a day is, people might tell you it's for exercise but exercise isn't a hobby - or rather, people whose hobby is exercise are the people who are pedantic and jargon filled about exercise things like VO2max and HIIT schedules and etc. The point of hobbies is that you spend your time doing thing-you-like-doing and if you have a geeky personality that generally means taking an interest in the pedantic intricate details of thing-you-like-doing.
"In ancient Etruscan they actually had a word ending for differentiating between a <grammar jargon> and <a grammar jargon> but it was only used on Holy days in one province and..."
"ok but who cares? where's the fun in that?"
"That is the fun in that!"
"What daily use is it?"
"..."
The job of programming is to build what your employer pays you for, but the hobby of programming is "can I build a trie in my favourite weirdo language so I can understand how tries work?" and "can I get this Arduino to run my code if I'm only willing to power it with this small spare solar panel?" and "can I get JavaScript and WebGL to draw the Julia Fractal with GPU acceleration just to see if I can do it?" and "can I make a playable game in a pure functional language and how will I manage game state to do that?" and there's no daily use for these things, they are wildly different. Yes you can use (language, data structure, algorithm, technology) in your day job, but that's not really the point. In that case it's job training not hobby. The point of them as a hobby isn't to achieve things it's to spend your time doing thing you find interesting. (Yes, some people like achieving things as a hobby and work on OSS tools as if it were their job).
Looking for a daily use of a hobby is looking for the wrong thing, and looking for other people's fun to copy is also looking for the wrong thing. You can't ape other people's fun, because you aren't other people.
My dad volunteers for amateur radio as a method of comms at rural events, but they all bring cellphones because they are better for comms. The radio is an excuse to get out to the event, and the event is an excuse to play with radio. He also takes part in a friendly competition to take portable radio gear up hills and make contact from the top. The radio is a reason to get outside and climb a hill, the competition is a reason to take some radio gear and play with radio. And it's run from the internet and smart phones because they're better for organizing and reliable fast comms.
> "I am mostly curious about what it would be mean to use it actually."
Some people buy a radio and sit in a shed and talk, some people limit themselves to Morse code and try to communicate over noisy channels, some people try to connect to people as far away as possible using limited radio power, some people track the atmosphere conditions and try to bounce radio waves off the upper atmosphere to make long range communications, some people pack portable equipment and climb hills and make radio contact from the top to get points in friendly competitions, some people find old equipment from junk sales and challenge themselves to make it work and connect it up to whatever else they have, some people like to argue about which manufacturer is better and which technology is needed.
The hobby originally (a century ago) was "wtf is radio??" and the bare minimum isn't any specific product or technology, it's an interest in wireless electricity and a thread that interests you to pull on.