Buy different cell phone holders / costumized keys / Car fresheners??

Suggestion: A way to buy different colored and even order customized phone cases and keys. It's nothing grand but the little detail these options could add can be awesome to own and show off.

For the car freshener, these would have a expiration date of course. It could induce different abilities such as relieving stress, dizziness (bad scent?). There should be different types of scents to choose from. Every time you would get in your vehicle, you could get a pop-up (colored box with words) on the top right giving a brief description of the type of scent you've put in your car.

It can only be used inside of a enclosed vehicle and you can't change them until the current one expires.

Example:

You've brought a lavender-scented car freshener.

Entering your car: [The smell of lavender helps relieve some stress]

You've brought a Citrus-lime scented car freshener

Entering your car: [The car smells like Citrus-lime]

Anything can replace the Citrus-lime scent.

Reason:

Customization and uniqueness. For some people, the little details make up a small part of something that'll be great! Imagine making what you own truly yours with the option of customizing it or picking a favorite color! We do it with cars, bikes, clothes and other's. Why not.

As for the car fresheners. there's no true need for them. It just adds to the immersion and helps make conversation. It doesn't even have to be fruity scents to choose from. Just an idea.