I loved the idea from Spaceships and Laserbeams, but I couldn't find a tutorial on it.
Now, of course, it's just folding paper, and I feel like I shouldn't need a tutorial. BUT, it makes me much more confident in tackling something when I can see what some one else did. A lot of times, I do it a little bit differently, and there might be a better way out there than how I did it. But, for anyone else who likes to have some direction to follow, here's what I did: :)
Fold the maps in half, hamburger style, and then fold down the top edge of the front and back two times. After you fold down the first side it'll look like this...
And you are done!