Sometimes, when my imagination needs a good spark, I pull up a Pixar animated short. The teams who make these things are masters of storytelling. Within a minute, you'll know who your characters are, what they want, and you'll also get a nice dose of whimsy and wonder.
When I first saw PRESTO!, I laughed until I cried.
My new favorite, though, is LA LUNA. I have no idea how I missed this one, but when I saw it today, it put a HUUUUUUUGE smile on my face.
Take a few minutes, right now, and watch it. It will be the best thing you see all week, guaranteed.