I started with measurements from here but wasn't happy with its lack of a flap and the straps. Each to their own. These little details mattered to me though. So, veering off on a path of my own, I ended up here...
See those cute little matching brownish buttons to secure the strap, don't you like that? I do.
And there's that flap I was looking for, where I attached Velcro as the closure.
It was just right for holding a book, DS, extra game case, and an mp3 player.
K actually used the black/white/turquoise one on her trip and I constructed the one above Friday but, I really, really liked this one. So, it became the model for these photos.