What I use:

hardware

Silent PC I got in 2013, still working great
LG DualUp vertical monitor ♥
Keychron Q3 keyboard with Kailh Midnight Pro silent switches ♥
Onyx Boox Go 6 ebook reader
Studiobricks One Plus sound-proof recording booth ♥
AT5040 microphone
Macbook Air M2 for recording and travel
64 Audio custom-molded earphones
Panasonic GH-5 camera now only for video interviews
Kensington Expert Mouse since 1995
Pixel 10 phone
Industrial Athletic squat rack, barbell, plates, and bench, right next to my PC so a few times per day I stop and do 5 reps, AKA “5×5”
Surly Preamble bicycle, modded electric
Nissan Leaf car

Vim text editor, all day every day
PostgreSQL database is the center of everything
Ruby programming language
Sinatra web DSL
OpenBSD on my server
Debian on my desktop
Ratpoison wm
Nginx web server
OpenSMTPD email server
Radicale to privately self-host my contacts and calendar, synced to my phone
Firefox browser with uBlock Origin and Link Hints
2FAS on phone for authentication codes
Everything but Firefox and Calibre in the terminal, so command-line tools like mutt for email, Beancount for accounting, sox ffmpeg and mpv for audio/video, mupdf for ebooks, and ssh everywhere.
Skritter and Wenlin for learning Chinese.