Went to Seattle's Asian Art Museum to do my assignment with the "monk at the moment of enlightenment", a cool wooden sculpture. He looks like someone I know, someone staid, meditative who suddenly had the urge to turn into a dancing girl, one of the other artworks there.
I've heard lots about how to go about writing and making one's own writing prompts, but... it's a lot more fun to write with one, almost like playing a game to trick oneself into a new mind. A bunch of my writing has come from finding a piece of art I relate to, a sudden idea, a mood, or from a variety of writing prompts. See my webpage for an Amazon linked list to my favorite writing prompt sources and Judy's Books for my reviews:
A Writer's Book of Days by Judy Reeves
poemcrazy by Susan Goldsmith Wooldridge
Fruitflesh by Gayle Brandeis
The Pocket Muse by Monica Wood
The Writer's Idea Book by Jack Heffron
One thing I can say is that the prompts that work best are open-ended. They don't imply a character, a storyline, or a genre. They imply a mood, provide specificity, tie into imagination with non-concrete space, imply place, style or action. One's that insist on some character spoil my intent, to find some part of the story I'm working on and take me to some other story. Think about it. If you're working a story, how does it help you to go to someone else story and if I were to do that, why wouldn't I just read? One's that insist on some plot point may entirely miss my story by not fitting into my character's growth. Most of all they should be fun, they should send me to another source, provide me new information, give me a new tool for my toolbox of writing tricks.