Back when intrepid men donned hard hats to plumb the depths, they didn’t leave the surface without a trusty sheath knife. Wood-handled beauties like the brass-encased Morse MK V are works of art, and they make a great collectors item.
I guess it would be fair to say the modern version of the Lady Galadriel's light could be the LITEBUCK. For something good came out of the 2005 '7/7' London bombings - the genesis of LITEBUCK Strobe Marker was formed.
This was recently confirmed when Fitbit - the company that manufacturers a suite of devices that track your steps, calories burnt and active minutes - floated on the New York Stock Exchange in June 2015.