There are some simply clever ideas indeed, like

• 5 little knobbies at the bottom of the drink holder, so you can open a bottle of water with one hand without looking
• a little umbrella in the door/under seat, because we never have one handy if needed
• ice scraper in the fuel cap, accessible from outside and can be stored when wet
• little plastic flap at the inside of the windshield, which can hold the parking tickets
• standard wall plug between seat
• …

The usermanual even has a section with these simpy clever things ;-)