If you value your money, you find ways to protect it. Here's a last ditch stand for when someone's trying to steal the cash in your pocket: the Creditor Carbon Fiber Money Clip Knife.
Created by John Kubasek, this money clip hides a tiny pocket knife that you can stab into a mugger's eye while pretending to hand over your bills. Make sure you know how to run, too, because while this blade is good for a surface wound or two, we doubt it will leave any attacker incapacitated enough to not retaliate.
The Creditor Carbon Fiber Money Clip Knife is made from carbon fiber, D2 tool steel and titanium parts, ensuring a durable make that will serve you through the years. It measures 3.5 x 1.25 inches when folded and weighs less than two ounces, all while being just as thick as three credit cards stacked together. Of course, it's going to get thicker once you clip your wads of cash, but that's a quality problem you probably won't be complaining about.
Unfolded, it grows to six inches in length, which should serve you just as well as any regular pocket knife. The knife part uses a Delrin ball detent, ensuring it locks when opened (i.e. it won't fold on you when you stab an attacking alien creature who jumps at you in the dark).
In case you just want a tiny knife, the black stainless steel clip is also removable, allowing you to slide the folded slicer into your wallet. You can order the Creditor Carbon Fiber Money Clip Knife, priced at $199.95.