Hamee sells a smartphone cover "Food sample cover for iPhone 6s / 6 (domestic eel kabayaki)" with "Kamiunaju" made by a Japanese food sample craftsman. The price is 4,104 yen (tax included).
This is a smartphone cover that realistically reproduces the "eel kabayaki" that is fluffy baked over charcoal. The price is the same, but the size of the eel is about 20% larger than the cover of the iPhone 5 version of the same series. It seems that the volume is increasing from "normal" to "upper".
It is possible to shoot with the camera even with the cover attached. The approximate size is 15.2 x 7.2 x 2.3 cm thick. Made of vinyl chloride.