Im looking for pant pockets made for food?

i tried google but couldnt find what i was looking for. Does anyone know a site or something where i can buy some or teach me how to make some pant pockets or fanny pack things made just for food? Like in napolean dinamite were he pulls food out of his pants. IF i were to make some what is the good material so its not all dirty and pocket lint full and stuff?~!