We find inspiration in many places, not only from within ourselves, but also from those who have gone before us. I think it's important to know the history of our craft and be familiar with the masters; Irving Penn is one of the masters I admire and his famous "Corner Portrait" series was the inspiration for a shoot I did last year. The client has an amazing building with beautiful architectural details, including great use of lines and angles; in one of the particularly acute corners, I found my inspiration for a series of portraits.
A simple one light set up with simple instructions for each subject: use the corner to express yourself, be yourself. No further direction was given.