You can garrot somebody with dental floss. You can blind someone by spraying deodorant in their eyes. You can give someone an unwanted tracheotomy with a ballpoint pen. You can knock someone cold with a laptop battery. You can remove someone's eye with a knitting needle. You can use the tiny file on a nail clipper to saw a Coke can in half, then slash someone's throat open with the resulting edge. The possibilities are endless.