Fake food
Not too far from Asakusa, there is a place called "Kappabashi"
In Kappabashi, they have a lot of shops that sell professional culinary equipments, as well as rare items.
Some shops you can buy or experience making "Food samples" or I should call it, "fake food samples"
（Warning： You cannot eat this）
Anybody can buy these items. For a souvenir, there are key holder types.
As I mentioned earlier, you can experience making these fake food samples. You should try making one when you are in Kappabashi.