Kiera Cass has one for each of first three books in the Selection series: The Selection, The Elite, The One.
And Sara Raasch has a GIANT board for Snow Like Ashes.
I think it's cool that authors make their inspiration boards public so readers can check them out. I do understand why some may keep them private, though, because I do. None of my story inspiration boards are visible for everyone to see. I've let a certain few friends have access to certain ones, but they're mostly private and not something I'm ready to share yet.
I have two for my Hamlet retelling that I wrote during NaNoWriMo 2013. One's for the original retelling and one is for the ideas I'm developing for the new retelling.
I have a board for my book inspired by my orientation group and first year here at college.
And I have one for my fantasy series that needed a lot of world-building. It's my largest Pinterest board by far. I have clothes, hairstyles, "fancasts," settings, and other plot elements in it.
So let's talk. Are you on Pinterest? Do you keep inspiration boards? If not, how do you collect inspiration for your stories?