you'll get a lot more complements than an ugly rubber cover.
My iPod had an ugly scratch..and a lot more than that. Plus, i love sticking stickers to things...So i decided to cover it up :)
Cut out pictures from the magazine and make sure they're small enough to fit onto the ipod. You might want to cut out a colorful page as background so there aren't silver spots.
Layer the images however you want on the back of the ipod and tape. Tape all the layers at once so it wouldn't be bulky. Make sure you didn't put pictures on the sides and corners.
Trim any leftover tape and you're done :D