The iPhone Waterproof case designed by Sanwa, features a robust sealing mechanism design to keep out the elements but still allows you to use the touch functions of the iPhone or iPod Touch as well as take photos via the rear window of the case. Although this won’t rank among the most feature rich items in your tech arsenal, it will certainly prove to be one of the most useful. You can purchase the case for JPY 3,280 (about $32) from Sanwa.