Well there ya go TimmJ, you can add curb feelers to your hat idea.
Or a band that emits a low sound but gets louder as you approach objects, like VORAD on trucks. You can call it Baldar
My little nephews want to see me put my head through the drywall again.
"Only if you're good," I smile and tell them.
Yesterday I was getting the RV ready for next weekend and i whacked my head three times in five minutes. Twice crawling under a cabinet to flip a valve and once going out the door. My wife said," You're going to have bumps everywhere..... what's up with that?".
My response.... ""No hair to warn me".
When you're as tall as I am (6'6"), you don't notice a difference. I've whacked my head on so many doorways, chandeliers, and Burger King hanging signs that I barely feel it anymore.
I'm 6'5" so I know what you mean.
I'm in the same boat, 6'-4". I have always hit my head on things.