Have you tried to sew your own using clear vinyl?
I recently worked with clear vinyl and it was VERY EASY to work with...especially if your finished sizes aren't that important...no one's going to wear it. :) By making your own you can customize your pockets. If you need a picture of what I did, PM me.
The vinyl was realllllly inexpensive at Joann's with a 40% off coupon - and I think they're having some type of Coupon Madness sale going on now or soon.
Good luck