What I mean by this cumbersome phrase is that this kind of ideation is based on removing the linear, rational, questioning, conscious thinker from the equation, and tapping into the results when they come. Everybody has their favorite way. Several people, responding to my last article's caveat that I was not referring to the thinking that goes on in the shower, wrote that their best ideas occur in the shower. For others, unconscious thinking occurs while driving their car. Or working out in the gym, riding a bike, or jogging.
Gardening seems to be a hot spot for hot ideas.
And sybarites I know report getting great ideas while being massaged and sipping wine in the hot tub. Some people put themselves in a trance state via meditation or actively listening to music. I get great ideas when I'm at the movies. I must confess that, really, I have no idea. But I do know how to make it happen.