Here is the bag I ordered. Looks like a good size and shape, and I'll be detailing the exterior to match more closely
http://i60.photobucket.com/albums/h33/wkevingossett/2014-09-02-13-33-35_zpsuwxnhhku.png
I was thinking about getting that same bag. There's a few more I have in mind, but I'm going to try to make it myself as closely as I can before I go and buy an already made one. I have some fabric that might work, I'm only worried it won't be thick/heavy enough for the job. Then there's also time constraints, while I won't be needing my costume done until April of next year I'm about to start school so I want to get as much done as I can before things become too hectic.