16: Sunglasses Visor Clip
You’ve gotta be in style when you drive, right? That is where the sunglasses visor clip came into play. Many automakers have tried different variations of this thing over the years. It could be in the center of the roof over the driver, or it could be built into the visor. Nevertheless, there are many variations that you’ll encounter (via The Sun).

The premise of this feature was simple, to ensure that you could access your sunglasses in a moment’s notice. You want your sunglasses where you can easily reach them, instead of digging around for them in your car.