The MiLi Power Skin and Pocket Pal want to up the ante a bit when it comes to thinness. The MiLi Power Skin is a case for the iPhone that is supposedly the world’s thinnest external battery for the 3G & 3GS. It should provide twice the amount of power for your device with its 1200 mAh lithium polymer battery. The case is available in eight two tone colors for $69.95.

MiLi also has what they claim is the world’s tiniest cell phone charger with a foldable plug. It is good looking, we’ll give them that. The Mili Pocket Pal mobile phone charger also comes in 5 colors. The Pocket Pal retails for $19.95.

Like a bitchy supermodel the Pantech Slate is claiming to be the world’s thinnest device with a QWERTY keypad. Priced at $49.99, you’ll need a two-year agreement and mail-in rebate for AT&T subscribers. Sporting black and royal blue, it comes with a 1.3 megapixel camera, instant messaging, Mobile Email and Bluetooth. It will be available by the end of this month.