Place it right on the cut where the tool opens, then follow it with the Fail Sound Meme if the fix goes wrong or the Clapping Sound Button if the tiny blade actually saves the day, keeping the knife moment as the setup for the payoff that follows.
Über diesen Sound
This is a split-second cartoon boing, barely a fifth of a second long, with a metallic snap as a Swiss Army knife blade springs open. It feels instantly playful and springy, like a visual gag landing in a single bounce. The effect comes from the 1941 Donald Duck cartoon Truant Officer Donald, where it punctuates the knife opening.