Aluminium Case for 2nd Generation iPod Nano 1 2 4 GB
This case is very cute and is good for the price.  I am concerned that my iPod might fall out because it doesn't clip that tightly.  Fortunately, I just want to protect my iPod from further scratches so this will work.  I don't know about wearing it with the lanyard because of the loose closure.  The lanyard doesn't match (green case with light blue lanyard is sort of odd), but is completely functional.