Friendly faced Purin cups.
Purin is the Japanese version of what our friends in America may call pudding cups, what those of us in Oz probably call creme caramel and others may call flan - it is chilled, baked custard with caramel in the base, which becomes a sauce/topping when the custard cup is inverted.
Purin appears on menus and in supermarkets across Japan. When something takes off in Nihon it really takes off and there are even plush toys and phone straps dedicated to the humble purin.
There is no escape from purin in all its glorious forms and flavours - pumpkin is a bit of a person fave. That is all.