COMMENT
USB Locket
You'll be surprised with what people are coming up with nowadays! Accessories are not just jewelry pieces anymore, they are gadgets in disguise! But hey, we can't complain! Two products for the price of one? Take my money!
1. Peanut Pocket Knife Necklace
Not sure how appropriate it would be to carry around a disguised knife in public places, but it would be a great tool to have at hand nonetheless. For when you need to open a package, cut off a loose string, etc! And hey, if you ever find yourself in an extreme situation, you have something to aid your survival!