Abs are trained with every breath you take and with every muscle group you work. If your bodyfat is low enough, and you have the right genetics, your abs will show year round.
As far as traps are concerned, deads are cool and so are shrugs, but take a look at what they do during a (side) lateral raise ~ they flex... just like a biceps.
My neck has been 20" since I was 18 years old. No need to train it. If you have a pencil neck, there ain't much you can do. The only real problem with having such a big neck is that your arms need to be just as big, if not BIGGER!