Redesign your iPod. The iFrogz iPod case allows you to customize the design of your iPod in three ways. The silicone components come in an array of colors; you can choose one for the main body, a band to wrap around, and a protective cover with a picture to cover the scroll wheel.
The components cost from $4-$6, and you can either buy as a set or individually to mix-and-match to suit your mood.
To see the full array of colors and styles, and to design your own iPod cover, see iFrogz's website.