/cgl/ - Cosplay & EGL

I really like the background characters in the Sand Planet music video, and I'm looking to cosplay one of them! I have a good idea for how I want to make a mask with see-through fabric to cover the inside of the eye-holes, but I'm stumped on the jacket.
Where can I find a hooded jacket similar in style to the ones they wear? (Since there are so many, I'm not looking to emulate an exact jacket, but I do want one that looks similar enough.) I can modify it with fabric of my own to get details down, but I'm looking for a good starting material.