how do you capture the mental-light-bulb stories that come up at random moments-
In the past, it was cheap notepad. Now it's slightly-less-cheap Livescribe pen notepad. The cost difference isn't much. But whatever I write on that pad gets uploaded to Evernote automatically, so I don't have to worry about forgetting about it or trying to consolidate notebooks or whatever. It's just a little flip-pad sized thing that fits in my purse and I carry it and the pen with me everywhere.
And do you prepare any work in longhand, or are you a digital-only writer?
Almost entirely digital-only. Though I do frequently make outlines and take notes offline. If I'm having trouble with a story, I'll print out all the interviews and read through/make notes that way and write up the outline freehand.
Great questions! Hope that's helpful