Tunewear has announced its first accessories for the fourth-generation iPod nano and second-generation iPod touch. Icewear is a frosted high-density silicone case for iPod nano 4G and iPod touch 2G offering ribbed sides for added grip and small holes in the rear for attaching charms, lanyard, or straps. On the nano, Icewear offers open access to the Click Wheel and screen, and offers open access to the touchscreen on the iPod touch, along with access…