Back when I was an artist, the pieces of creative writing I'm most proud of - broad ideas, and individual lines - mostly came to me from within this state. I've had a few technical (ie, to do with [dayjob] technology) insights come that way, too, but much more rarely. I don't know if that's a difference between brain processes, or the depth of my own knowledge and experience in the two areas, or my level of interest / commitment - I usually try not to think about [dayjob] problems when I'm not at work.