Tunewear's Tuneshell for iPod nano 3rd Generation ($20) is a hard plastic alternative to the company's past, popular series of rubber Icewear cases, featuring a two-piece snap-together clear body and an easily detached lanyard necklace. Tuneshell provides full access to the new nano's bottom surface while protecting the rest of the iPod, save for its Click Wheel, which is entirely exposed. Interestingly, the front half of the case snaps inside of…
