I do my best brainstorming with a couple of people, both writers. However, I've found my beta reader to be a good at this too, as long as she's familiar with the story. I've also recently learned that I'm not so bad all alone. However, I have to get away form my computer and my office to do that.
Today, I had two meetings. One finished and there was about an hour left until the second one. I stopped by my favorite place, the Sugar Hill Bakery & Cafe, to grab a bite of lunch. Because I was alone, I pulled out my handy dandy ACFW notepad and brainstormed with myself.
I discovered I'm not so bad at it. In fact, I worked out a few things pretty well. I won't replace my brainstorm buddies, but knowing that in a pinch, I can rely on myself is pretty cool.
Now I've got to run those ideas past my crit partners to see if they'll fly. Meanwhile, I'll cross my finger, toes, and eyes.
What's your favorite method of brainstorming?