Bandana (Fallout 3)

The Bandana is a white rag which is rolled and tied around the forehead.

If you get it early in the game, you can wear it with a pair of sunglasses. Not only does it look kinda cool, you can get +1 Perception with it, which helps your radar suss out any enemies near by. It is very useful early, because the bandana/sunny combo gives damage resistance close to other head gear.

The white bandana can be looted from Ryan Brigg in the Jury Street Metro Station.