>no-one used street directories anymore

I disagree! Out in the woods, a few pages ripped out of an old street directory found in the trunk once saved my ass... quite literally. Couldn't have used a smartphone or GPS for that!

>Ideally, anyone looking through the window should think I am the kind of compulsive person that carries every single thing inside each night.

When I have to park my car in a shady-looking spot, I usually open my glove box to reveal nothing but garbage inside, and a note saying "nothing to steal here". I obviously can't prove this works, but I would like to believe it does, because thieves might consider it a courtesy that saves them unnecessary hassle.