Baseball Design Apple iPod Touch 2G (2nd Gen) / 3G (3rd Gen) Protector Skin Decal Sticker
My 12 year old picked out this baseball skin for his itouch.  He had never used a skin prior to this, just a regular case.  It is very easy to put on, just clean the itouch first and place slowly.  So far, it is great.  He has had it on over a month, usually keeps his itouch in his pocket, backpack, etc.  (ie..as a 12 yr old, he is not very careful with it) and is has not scratched or moved.  I really wanted him to get a real case, but think the skin has worked out fine.  Plus, everyone likes how it looks.