Ask HN: Any interesting niche hobbies? • Hacker News Board

Re: Ask HN: Any interesting niche hobbies?

#741

Post by ferguess_k » Sat, Apr 11, 2026, 5:21 PM UTC

I used to do some fossil digging in an abandoned brick factory, where people have open access to layers and layers of shale rock rich of invertebrate animals. I thought it could be a useful hobby to teach my son about Geology in general and get him moving. Sadly I dropped it when he was 3 because I really did not have the time and energy to pursuit it frequently. I also thought about attending a few Geology classes in local universities but that probably needs to wait until he grows up.

The other hobby I have is to read the source code of legacy kernels such as Linux kernel 1.0, figure out a very early version of a component (e.g. VFS) and tried to trace how it evolves. I completed the MIT xv6 labs for preparation and just started this journey. Not sure what I can get from it, but it is fun to figure out things -- AND I can label myself as a "kernel programmer" to give myself a bit of self-recognition.

Re: Ask HN: Any interesting niche hobbies?

#742

Post by rkhassen9 » Sat, Apr 11, 2026, 5:23 PM UTC

hiAndrewQuinn wrote: post #90

Recreational mapmaking. Every couple of months the family and I will book out some long weekend to just go to an Airbnb in some random town with some copy paper and just go around trying to draw what we think is around us. Inevitably the lines collide and we have to ask some local passerby for help, and if they know any interesting places nearby, and before you know it they're following along with a colored pencil an…

This is awesome. I think there is something about making your own sense of things, your own order that brings an aliveness and a freshness to an experience. I will try this.

Re: Ask HN: Any interesting niche hobbies?

#743

Post by e-topy » Sat, Apr 11, 2026, 5:29 PM UTC

biotinker wrote: post #677

hopinhopout wrote: post #631

Earlier quoted context omitted.

I have to ask, how often is tissue culture used? I'm not sure of it's exact usecases like respawning old tree samples but it does seem very related.

It isn't, really, at least not by us. Apple trees are pretty easy to propagate if they're alive. Snip off a twig, graft it onto another tree, and away it goes. Some poor-condition trees can certainly present a challenge in terms of finding ideal graftable wood, but even a poor-quality scion is a lot easier to propagate via grafting than trying to culture in a petri dish.

Oh wow that's getting really interesting, we have a bunch of old and new young apple trees on our field, it'd be really cool making tree mutants.

Do you know any good first resources about this? I'd like to give it a try.

Re: Ask HN: Any interesting niche hobbies?

#744

Post by e-topy » Sat, Apr 11, 2026, 5:40 PM UTC

shivekkhurana wrote: post #27

I started designing my own clothes. The insight was that I spend 80% money on suits that I wear 2 times a year, and the rest was low quality clothing I actually wore. I flipped it, and made suits and pants that I could wear everyday. The fast fashion stores were crap quality, my body is not a template size and I care about fabric and comfort. The process was to learn how to sketch, to determine fabrics, colors and fi…

hell yeah, I have tailed my T-shirts before but nothing else, making my own sound like a nice challenge.

How do you source materials? I'm usually very picky about the material, especially if it touches my skin, and usually the heavier the better. The best T-shirts I ever owned was a military surplus made from organic cotton, and was more than twice the weight of my other T-shirts, but I couldn't find anything like it anywhere.

Re: Ask HN: Any interesting niche hobbies?

#745

Post by rkhassen9 » Sat, Apr 11, 2026, 5:56 PM UTC

michaelhoney wrote: post #514

I built a sauna. It was fun and worthwhile and now I have a sauna! Also I am turning into Middle-Aged Synth Guy.

Oooh. Would love to see photos and plans! I’m wanting to build one too.

Re: Ask HN: Any interesting niche hobbies?

#746

Post by VoodooJuJu » Sat, Apr 11, 2026, 6:58 PM UTC

shivekkhurana wrote: post #27

I started designing my own clothes. The insight was that I spend 80% money on suits that I wear 2 times a year, and the rest was low quality clothing I actually wore. I flipped it, and made suits and pants that I could wear everyday. The fast fashion stores were crap quality, my body is not a template size and I care about fabric and comfort. The process was to learn how to sketch, to determine fabrics, colors and fi…

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Re: Ask HN: Any interesting niche hobbies?

#747

Post by VoodooJuJu » Sat, Apr 11, 2026, 7:00 PM UTC

hackrmn wrote: post #73

unsupp0rted wrote: post #3

My hobby is organizing in-person meetups for random people to get together, chat and make friends. Barely structured, if at all. I've found this rewarding and ended up making friends this way. You have to accept that 5-15% of the people who would show up to something like this are genuine weirdos you probably don't want to be around. And another 10% at any given meetup are autistic or neuro-divergent but well-meaning…

Between the genuine weirdos, the autistic and/or the neuro-divergent, is there anyone left, really? Do the "normies" genuinely exist? Happy-go-lucky, knows a bit about everything but doesn't nerd out on anything, picks up every conversation subject and listens and holds their own in a manner that is just right? I am genuinely curious about the existence of these "superhumans".

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Re: Ask HN: Any interesting niche hobbies?

#748

Post by eszed » Sat, Apr 11, 2026, 8:26 PM UTC

Klonoar wrote: post #581

eszed wrote: post #482

I play vintage baseball. It's baseball using rules and equipment from the 19th century. There's nothing else in my life that connects me to my eight-year old self, but the feeling I get running out onto the field or going up to bat is exactly what it was back in Little League. It's also a really fun community of passionate baseball nerds, and a good motivation to stay fit.

Is there a breakdown of this to read? Sounds fun!

I don't know of a good one, sadly. Run a search for "vintage baseball" and you'll get various amateur sites for various local leagues, with explanations of varying quality. If you're truly interested, swing by a game local to you and watch - and, ideally, follow the players to the pub after. It's all very analog, which is another reason I enjoy it.

Re: Ask HN: Any interesting niche hobbies?

#749

Post by e-topy » Sat, Apr 11, 2026, 9:14 PM UTC

patapong wrote: post #38

Synthesizers! I like it because it's tactile and immediate, and you're not glued to a screen, but can create fun-sounding beats. Nowadays there are nice, cheapish groove boxes that are perfect for noodling on the couch. I started with the Novation Circuit Tracks, and also really enjoy the Teenage Engineering EP-133. Not to say that I am any good at this, but it's an enjoyable hobby! Bonus if you are friends who are a…

Oh yeah I've made some designs for a custom Eurorack style synth, but I quickly realized how expensive it would be to make a full rack. A synth scales exponentially, to get even some usefulness requires getting a lot of modules. Maybe one day.

Re: Ask HN: Any interesting niche hobbies?

#750

Post by r5sz » Sat, Apr 11, 2026, 11:37 PM UTC

biotinker wrote: post #181

I got myself involved with a nonprofit local group preserving local pioneer era apple trees. They've been DNA testing and cataloging the trees, and had all the info stashed away in google drive and onedrive folders. The founder was looking to step back so they asked me if I wanted to step up as project lead, which I did. I took the info and organized it into a nice wiki-style site with maps and descriptions so everyo…

Wow that's awesome thanks for sharing.