Though Japanese brand Simplism has an even larger array of cases for the fifth-generation iPod nano, we're spotlighting a handful of the more interesting ones here. The Sport Armband for iPod nano ($25) includes a black armband and a silicone case in your choice of four different colors, each with a detachable Dock Connector cover, screen film, and cloth; the armband splits into two pieces to accommodate super-small arms and medium-sized ones. Simplism's…
