Ev BogueI have two notebooks. I purchased them both from Paper Hammer in Seattle. They're manufactured by Marquand Editions in Tieton, WA. When I buy one of these notebooks I'm supporting an organization called Mighty Tieton, which is attempting to reinvigorate the economy of a small town in Washington that's been hit hard by the recession. They make absolutely gorgeous notebooks, which you can see from the photo I've attached.
The first notebook (the light tan colored one) is a sketchbook for ideas. No page is sacred. I tend to write everything down that occurs to me in this notebook.
The second notebook (the one with the blue lines) is for my next book, Untether. I write only things related to Untether in this notebook. By differentiating, I know that any idea that comes into my mind could potentially end up in the my book. In this way, the ideas don't get lost.
In the past, I used Moleskine notebooks, but when a better option came into existence, I upgraded.
Whenever I need an idea to write into Scrivener, I check in with my notebooks. There always plenty of ideas in there.
If I don't have ideas, and I've run out of ideas in my notebooks, then I realize that it's time to sit and brainstorm. I turn off my computer, go outside, and write in my notebooks until I have plenty of ideas to work with.