One of my favorite Deep Thoughts by Jacky Handey of SNL fame was this:
There was probably an old Viking saying that said, "Ax in the head, early to bed; ax in the helmet, a friend of Helmut."
With that in mind, I give you this fantastic Viking Costume tutorial, via celebrations.com.
Or, I do happen to have an extra viking hat lying around. If you're interested, let me know :)