This creation by knife-maker John Kubasek combines two useful essentials in one compact package. The Creditor Carbon Fiber Money Clip Knife ($200) combines a carbon fiber and titanium 6-inch blade with your everyday basic money clip. The tool is only the thickness of three credit cards and is designed to also fit in a regular wallet if the money clip is removed. Could be quite the handy accessory if you prefer the simplicity of one quality blade to a tricked-out army knife. Just be careful not to make any slices in those bills… or your wallet.