They're cool af. Look at those colours! And the ergonomics.
I leave water bowls for them during summer.
They're not exactly friendly but when you observe them enough you can judge if you're annoying them and should gtfo. Most of the time they just mind their own business.
I always carry a small Victorinox Navaja classic swiss army knife linked to a small Fenix torch E01. It fits inside the lighter pocket of my jeans.
Also always carry a handkerchief (fabric, not disposable).
As mentionned already, I usually also have earplugs in my jacket or bag. A Go-Girl is a must have too when traveling if you don't have a pee-pee.