It struck me when I was looking at good ol' M42 the other night, that there is a witches face right in the middle of it. I'd looked at it so many times before and never noticed it. But once I had, it was glaringly obvious (and kind of creepy). The trapezium sparkles in one of her eyes and her face is lit only ony on one side leaving the rest to fall off into darkness, but . I've tried to find a picture that does it justice, but being centered around the brightest part of the nebula it is usually blown out, or the contrast has been flattened.
But I'm curious if others have shapes that they see that are 'unofficial' interpretations of what we are supposed to see.
