So I signed up for Holly Lisle's How To Think Sideways writing course, and dropped it when time constraints became too much. I've picked it up again, and have been working on the course material. I'm working through lessons three and four simultaneously (they work well that way, at least in my head they do), and I've got two solid thriller ideas. (Although I can't decide if thriller or suspence is the right word, I'll work that out later).
It looks like my brain was ready to start this up again. I just hope I can hold onto it this time!