The easiest fandoms are Supernatural, Harry Potter, Captain America, Firefly, Doctor Who, but actually, I can make a bag for any fandom using quotes (though I intend to get some GoT designs, if there's demand). They're made of black denim on the outside and a theme fitting lining; the bag includes three pockets, a big one and two smaller inside pockets, and it's closed with a zipper. I usually have a design on the outside and a quote on the inside of the flap. Sometimes, it's vice versa :)
One bag is 25 USD. I offer free shipping, though I'd be happy if I could send multiple bags in one parcel to a person who'd distribute them to their respective buyers (because it's not cheap to send to the United States). You can choose any design I'm able to make; if you want, I send pics so you can give your okay.
Unfortunately, I can't start working on those bags until January :(
Here are a few examples: