Not entirely a miss-leading topic though.
Anyway, you see the green green knife above? Guess what it’s made of…
Gave up? OK, Fiber optic glass. Yes, the thing used in fiber-optic cables (That we suffer from due to fishermen interruption) and costs you $168 (~50KD).
Worried about rusty knives or want to connect it to the intertubes somehow? This is your answer.