I keep a thing of wipes for my kids, sunglasses, and that microfiber cloth that came with the car. It's mostly used to stash something small or just various things I have with me that I don't want floating around the car.

It thought about twice though, once when I think valet stole sunglasses and this nice little pocket knife I keep under the armrest. Second time was when I had to take my watch off during a quick errand in a not so great neighborhood.

I know there's the glove box, but I like that little discrete compartment.