Adding banded tension to your shoulder work is guaranteed to trigger new hypertrophy gains. Just grab a couple of resistance bands and wedge them under the bench for overhead dumbbell presses.
The key is to lift the dumbbells all the way up to the top and hold them there for a couple of seconds in the contracted position of each rep.
Foam rollers, lacrosse balls, back walking, kettlebells. Can these work as tools to fix tightness and pain? Not when you use them like this. Here's what works better.