What stretches best relieve shoulder/neck tightness?

Glen White
Extended child's pose is one of my favorites. Whenever I am unsure how to stretch a body part I research it on Pintrest. They have pics and names.

Natalja Zorn
To me the best is to pull the head on one side and hold and then to another aide with the opposite hand and hold. But I have to hold for a minute every time.