What is a niche hobby of yours that you are fascinated by and would like to share with others?
I'll start. I have recently gotten into 3D printing, and, while incredibly frustrating sometimes, there's nothing more rewarding than getting a perfect print.
One of my vices is buying things, and I excessively research almost everything I buy. So one stressful day I realized I needed more pencil lead, and ended up researching mechanical pencils for like 5 hours. In that process I kept going through a thought loop of "I rarely even use a pencil, why would I buy a nice one? I guess I could use it for drawing. But I already have drawing pencils. I should probably just get a pen. But then I'd spend another 5 hours shopping for pens and I need to stop wasting time. So I'll just get lead. But pencils are cheap, just buy one"
Then after I bought a pencil, I got a YouTube recommendation for a video on fountain pens because Google is creepy, and then I watched it. Pretty much downhill from there
And it is quite a hill! Pens, nib grinds, inks, papers and notebooks, cleaning/maintenance, penmanship! I feel like Pooh hitting the honey jackpot. It really is a delight writing without applying pressure.