I love ZoomAlbum's do-it-yourself, pocket-sized books. Although marketed as 3-inch-by-3-inch photo albums (Windows/Mac), I use them for lots of unintended purposes: user guides, scrapbooks, and even phone books.
Sometimes I create an album as a mindmap, then import it into ZoomAlbum. I even created a mindmap in a prior weblog post to show a few of the possibilities for supporting decision-making.
Check out a project management guide I made at their website. Thanks to the folks at ZoomAlbum!