I know it's old-school, but I have a copy of everything in a comp book during October Prep. Because I usually find myself somewhere without wifi, or in a random car driving, or whatever, and sometimes it's just the ability to draw things out freehand or make associations that works for me.

Then I copy it into WDC and/or G-Drive. And I've been looking into some of the other things, too. Just 'cause.