If there’s one USB drive you shouldn’t take through aiport security this would be it. The Hand Grenade 4GB USB Drive stores all of your data and makes everyone around you a bit uneasy. We can only imagine the priceless look of panic on your local librarian’s face when you take a grenade out of your bag and pull the pin, only to have her scowl with disapproving anger when you plug it into a computer as you knowingly snicker to yourself.