Well, my ideas come to me quite randomly sometimes... like I'll start writing something, and suddenly an idea will pop out of nowhere. Of course this usually causes me to write half of it over again, but that's okay.
I think some of my best ideas are in my newest fic "Look to the Sky." I knew I wanted to write a story about four people searching for paradise. (The Wolf's Rain phase...heh heh) But then, on the other side, I had just got done reading doujinshi and wanted to write about Gakis. This caused me to do some major research on Japanese mythology. At first I just wrote down simple lines about two of the characters, thought it was idiotic, erased it, then got an idea about deformity. What if people of disabilities were searching for this "paradise"? So one of the characters became blind due the dark powers of his heart, guided only by an angel ornament given by his deceased lover. And it basically flowed from there. But then again, I have very odd ideas. ^^;;