I'm not saying 20+ years working with computers is bad for everyone's posture but I've got this pump-up neck traction device and it's life changing. My neck hasn't felt this relaxed since I was a youngster. If you have upper back/neck pain from too much screen use give them a try. They look ridiculous but you wear them indoors for 10 to 20 minutes now and then and if you're 40+ who cares anyway.
Fosstodon is an English speaking Mastodon instance that is open to anyone who is interested in technology; particularly free & open source software.