What is that item you always bring in your pack that other people don't usually think of as necessary?
For me it is baby powder. Going barefoot in my shoes with baby powder is the only way I have found to avoid that rotting foot syndrome and blisters. I have come back from weeks in humid weather without washing and held my shoe right up to someone's nose and they said it smelled GOOD!
Inb4 CEEGE about his umbrella
With what I have gained, I wander about in all the world, without being subservient to anyone. Therefor if thou like, rain sky! -The Sutta Nipata