The definition of creativity that a lot of people go with is "appropriate novelty." For something to be appropriate, it has to be realistic, so unfortunately, you can't use a key as an eyeball. Boo! But "novel," the second thing, is that nobody had to have said it.
La definición de creatividad que mucha gente acepta es la de "novedad adecuada". Para que algo sea "adecuado" tiene que ser realista, así que, lamentablemente, la llave no sirve como ojo. ¡Buuu! Pero "novedad", el segundo aspecto, significa que nadie lo haya dicho antes.