Hmm... I could give some legitimate "unorthodox" things I've done... Though it all makes sense to me.
For instance, I use the color pie from Magic the Gathering to help figure out my character's approaches and philosophies to things, what they'd best align with, and why.
For instance, I needed to figure out Tennis playing styles for some characters. So it went from knowing their personalities, using that to figure out which color in the MTG Color Pie they align with, and from there extrapolating to the Tennis style that best suits them. And after that, I'm going to figure out how to piece the actual Tennis match together using pro wrestling match psychology.