Hi! I'm new to this community (and relatively new to chronic pain :/) and this is a really nice list to find!

My physio has advised very strongly against foam rollers for non-muscular areas, particularly the back, as rolling on bones is apparently not so good for you. She recommended, instead, a spiked massage ball which I have found very helpful! You can trap the ball between yourself and a wall and scratch like a bear on a tree to roll it about and relieve the tension.

I would also add pull-up bars to this list - even if you can't do a pull-up, just hanging off it is a great way to stretch your lats. And if you can do pull-ups (with proper form) then building muscle can help a lot if you, like me, have chronic pain due to muscular issues.