GM. Tweaked neck is making a slow recovery.

What exercises (if any) have been transformative for your own posture and desk-work endurance?

Regular Yin style Yoga practice, and a standing desk, with quality mat. Sometimes need to use a timer to remind me to switch stances.

Maschinen Krieger, scale models and the occasional Gundam. 

Ethereum Core Dev - Besu - PG4LYFE

any workshop style anti-fatigue mat works, generally 2cm or so thick. I switch every 30-40 mins, or as i feel the need.

Mat for standing? Which one? I have to be more disciplined with timers. How often do you take breaks/switch stances?

I have tried other types, and those might be better for others tbh. I do yin because I also do regular cardio and weight training, so I don't need a "flow" or "power" type routine. I need flexibility and recovery. Yin is very slow and steady and deep.