10: The C.E.O. Billfold Wallet for iPod nano

One of the advantages of the iPod nano is its size. With a height of 2.75 inches (69.8 mm) and a width of 2.06 inches (52.3 mm), it fits easily in the palm of your hand and weighs only 1.74 ounces (49.2 grams) [source: Apple]. That makes traveling easy, and most listeners either hold onto their iPods or simply carry them in pants or shirt pockets.