a tutorial by Pixeltuner of ca.org and ended up with this. 32 compositions. While some are worse than others, these are very raw and you can get more ideas if you flip the canvas vertically to see it in a new way, or invert the colors. Fun way to loosen up and come up with ideas.
I realised when going through these individually that my mindset limited my imagination. If I thought "ok look for space environments" then that's what I would get. If something looked like a face then I would be stuck with that image. I suppose when it comes to finding something out of these it boils down to your visual library.