I attended an annual event of the Vancouver Children's Lit. Roundtable, called Serendipity, and this year the theme was The Graphic Novel. It was an eye opener and an inspiration. And as the first speaker began to describe his childhood and the writing and illustrating collaboration he has with his sister, I got an idea! That's right, an idea for a short graphic novel. I admit, it could be a picture book, but it would be quite different in tone as a graphic novel, and that's how I see it. I'm not an artist, but I did some scribbles and captions in squares and it started to feel possible. The story was based on an incident from my childhood, but grew much bigger from that little seed. (The seed was actually an old photograph)
So here are two ideas for you. Read some graphic novels - or comics - and see if this is your kind of genre in which to write.
Pay attention when you are listening to any kind of lecture or talk, because a word, a sentence or just an idea might light a little flame in your mind that will grow into something bigger. Pluck what you need out of the presentation, or pay attention when it waves a flag at you!