One of the things I do after a long day is put on my frozen hat. That is right my frozen hat... I have a number of touques that I have seaked in water, squeezed out and then thrown in the freezer. At the end of the day, I often pull one out, let it thaw, and then wear it as I catch up with my personnel emails etc or watch a bit of Boston Legal.
It is a great releive for me and I think it is because it has an effect on some of the small veins that drain from the skull but who knows.
I also wrap a partly thawed linnen around my kneck loosely and this helps our as well.