Paper Clips

I just dropped a bunch of paper clips. I don't know why, but I wondered who invented them. Kind of random, but whatever. Turns out its origins can be traced back to the Byzantines who made them from brass. They were expensive and usually only used for important documents.

...during WWII, the Norwegians, who were being occupied by the Nazis, wore paper clips on their lapels as a symbol of the resistance...