If you want to knock yourself unconscious, you can always ask a friend to hit you in the head with a very hard object. I think a better question to ask yourself is why you would want to do this? I don't recommend it.
You better be careful if you want to knock someone unconscious because that person may do it to you instead. You will most certainly face jail time for assault that will remain on your record forever. A blow to the head might knock someone unconscious.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.