My creativity is terrible, although there are two things I've realised about myself.
I can imagine anyone saying anything, even in another language, while retaining their voice and accent.
I can dream about pretty big places pretty consistently (imagine an area the size of Mario Odyssey's sand kingdom; I can fly around without stuff changing). My brain apparently also has some good music playback in my dreams. Great quality, the lyrics and music don't change, just like as if I was listening to it from an MP3 player.