Omiyage are the presents that Japanese bring back to their family and colleagues when they have been away on a trip. Usually they are cookies, chocolates or senbei but I know some people that send boxes of fruit from Okinawa, and crab or salmon from Hokkaido.
Even the big name brands have products specifically produced for omiyage. Nearly every place I have been to in Japan has their own Hello Kitty doll, while KitKat produces flavors that are only available in certain prefectures. Here are a couple of boxes that are available in Nagano, Blueberry Cheesecake and Red Chili.

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