What I enjoy are the guys that roll there shoulders back, in a circular motion....so they get a full ROM. LOL. THat is priceless.
Deadlift, BB row, and Jump Shrug for 60 days. Take some Dianabol - methandrostenolone - if you have it. Get some bigger t-shirts, you will need them.
I also think overhead squats are great for trap development. That is what is so great about training the Olympic lifts. Damn near every movement has trap in it. The top of the jerk, cleans, etc. Pretty much we get 4 sessions a week of pulling from the floor.