The 7 Deadliest Items You Can Take Anywhere. I’m a big supporter of everyone’s right to defend themselves with weapons. But it isn’t always legal or practical to carry a gun, knife, or other obvious weapon with you. That doesn’t mean you are defenseless in event of an attack. You likely are already carrying a lot of discreet weapons on you. If you are willing to improvise, these 7 items make for great weapons that you can take with you anywhere.