I was working in my engine compartment today and managed to bounce my head off the hood latch a couple of times. No damage done, but it was just a matter of time before I gouged myself. I remember
@BIGSHCLUNK (https://forum.e-bodies.org/mlist/bigshclunk_53) posting a pic of a cut on his head from the same thing, so this was my fix: The Bigs Bubble Bumper.