I've talked before about how I make collages for my books using pictures from the web or magazines or my inspiration folder (where I have hundreds of images from old magazines that I save because they speak to me for some reason.)
One fun thing I did that made a great artist's date/writing exercise was create a tarot collage of my hero and heroine's journey. There's no real trick to it. You just pick a tarot deck with imagery that appeals to you (this was The Secret Tarot by Marco Nizzoli*), spread the cards out on the table, then pick those that resonate with your vision for your protagonist. That's what I did for GRAVE MERCY.
So the top row was the major influences impacting the two main character's lives, and then the second row was the hero's journey and the bottom row was the heroine's.
Or, you could be even more official and do an actual tarot reading for your characters or story.
Mostly just a fun way to get in touch with the story at the intuitive level. Sometimes the cards you pick can surprise you.
*I have used my paltry photoshop skills to cover up some of the images so they would be work (and MG!) safe.