At some point, I should see about exploring some AI development concepts on the compute power that I already have readily available at home. But, until then, and until I actually have the inertia to explore the concept much deeper, there’s some freely-available NightCafe AI studio.
We begin by asking it to come up with an idea based upon a word or a concept: a river.
How’d it do?
Ask it for a river, and it renders something that looks rather like a river:

Perhaps a setting for a pivotal scene involving Aragorn and Boromir.
Right, so what if we ask the AI to render something a bit more complex? Perhaps a river full of fish?

Now it starts getting a bit interesting. Using a cyberpunk style, it creates a river, with fish — leaping? floating? flying?
Eh, could evolve that a bit more.
I rather like the cyberpunk interpretation offered by the AI, so let’s ask it again…
We’ll just ask it for the same thing again…

What if we drop the determiner, ‘a’?

Okay, now let’s ask it for something somewhat implausible — not really a thing: a river full of sleep

Certainly as vivid as one may expect a river to be during sleep. But let’s do it again…

Yep, that’s enough AI exploration for one day.