Sword and silk scarf
I watched the film again last night for the 10th time.
First time I noticed that in the scarf scene, Frank leans forward and takes the scarf but when he has it in both hands it lays across the sword blade (without damage). THEN he tosses it up in the air and its own weight is enough for it to fall in two pieces, cut by the sharp blade!
Also, in the cabin scene, with the drunk Nicki, Frank hears a noise, draws his gun and then tells Nicki to stay put BUT he seems to point the gun AT Nicki to make his point? Odd for any trained gunman to sweep his pistol towards someones head by mistake, its just not done. The four rules and all that