So you just bought a Mercedes-Benz, and you want to class it up. Don't even think about getting something tacky like aftermarket rims! That's horrible! You have a beautiful car here! You need to treat it with respect!
Here we are: the wind-powered LED hood ornament. It's a plastic hood ornament with a built-in fan. As you drive and wind makes the fan move, it powers LED lights that flash. How downright classy! I can only imagine the huge increase in resale value your car will attain with such an addition. And for only $5!