Wowee, glad Catrin revived this thread.

Two more my myofascial therapist gave me:

* Put your hand on a wall, fingers pointing up, elbow straight at shoulder level (but not locked). Turn your feet until you feel a good stretch in chest and forearm, then turn your head away from the side being stretched.

* Anchor your sternum by crossing your hands on your chest. Rotate your neck to one side and slightly extend it. Jut your chin out as far as you can, then slowly open and close your mouth (pretend you're a fish, she described it).