I thought of a similar thread but I think the results would be pretty much the same. It's great to have some mutual inspiration here.
Anyway, there's tons of stuff I can list here. I'm gonna list some stuff but will probably forget 70% of the other stuff because it's become so common in my daily life.
Own NAS as private cloud
Self-host on my NAS to not use internet services that spy on me (like Bitwarden, Joplin server, cryptgeon, Syncthing, Nextcloud)
OPNsense as my router of choice
W10Privacy (because I still can't switch to Linux because of circumstances)
Firefox as my browser of choice with some extra settings to harden it (I tried something like LibreWolf in the past but I can't use Spotify without DRM)
uBlock Origin of course (and some other browser addons like LibRedirect, ClearURLs, Decentraleyes and so on)
Uninstalled/disabled all apps on my phone that I don't need (also saves battery)
Been using custom ROMs on my phone (but I made some bad experiences with stability so I stick with the stock ROM for now)
NextDNS (with encrypted DNS)
Whoogle (instead of Google)
Lemmy (instead of reddit, haha)
Avoid accounts (and even links) to something like Facebook, Instagram, TikTok and so on
Libreddit, Nitter and all the other privacy friendly frontends for social media
Never connected devices to my LAN/Wi-Fi that don't need an internet connection (like a stove lol) and never installed the apps on my phone to operate them
Gonna add some more to the list whenever something comes up in my mind. Like I said it's become so basic in my life that I don't always think about it anymore when I use it.
Btw things like 2FA only help with security, not privacy.