Silicone Skin for 30GB Microsoft Zune with Armband & Belt Clip - 10 Color Variations!
This is a great product.  I bought them for my 2 brothers' Zune and bought a different case, for myself.  I like my case, but their's are exactly like mine, but I only paid $1.99!! Which is amazin!!  I paid $8.99 for my current case, but I am thinking about buy another one of these, just so that I can have a different color to switch to every once in a while!!! :)