In 2002, DC Comics introduced a villain named Onomatopoeia, an athlete, martial artist and weapons expert who often speaks sounds.
Sounds surface in road safety advertisements: "clunk click, every trip" (click the seatbelt on after clunking the car door closed; UK campaign) or "click, clack, front and back" (click, clack of connecting the seatbelts; AU campaign) or "click it or ticket" (click of the connecting seatbelt; US DOT campaign).