Personally I like to use my printer to enable my other hobbies, but along the way I've picked up 3d design and printing as secondary hobbies.

But it's only worth it if you have a reasonable number of those parts, or if lead-time is important. For most people designing stuff, led-time is essential, but not everybody that want some specific part designs it.

I decided to install arch once. Didn't have any issues per se, but spent far too much time going through all the window manager options, file browser options etc etc etc.

I eventually decided that I needed an os to do stuff, not be the stuff to do.

I just recently started to customise my Powershell profile. Let's see where this leads...

I just use a premade Debian rather that selecting every single tiny piece.

If I need to change things I can, I just don't feel I have to change everything.

Nowadays I'm using Code with the Vim plugin and I haven't tinkered with my config for quite some time.

Emacs is infinitely more powerful - but with Code I was able to set it up once and be done, and there's value in that too.

Having a 3d printer now, I can get a half dozen iterations on something done in a day and compared to a single iteration per day from the library. So if you're designing your own parts and can't draw them perfectly first go, having the printer is huge.

Replacement battery covers for remote controls. If I value those at $200 each, I've broken even.

If you are lucky enough to have a neighbour to do the commissioning, maybe, but otherwise shipping has gotten so expensive (at least in these parts), and 3D printers so cheap, that a getting few design iterations in your hands will practically buy you the printer.

My woodworking setup for my garage, however. Someday it will see use other than for organizing my woodworking setup in my garage. I just need that one more tool. And to build a place to put it.