I always wanted to make Matryoshka bento, but I thought that the facial expressions looked too complicated to make. But then I saw a picture of an Unazukin doll, which is a reminiscent of a Matryoshka doll, however the facial features are simplified and 'cutified' ;) - which is typical Japanese, I think.
The Unazukin dolls react to voice and can nod and shake their heads when questioned. They are meant to be a special friend who can give you some advice. The idea is actually somehow nice, but it's rather silly, because they will also shake or nod their heads when you bang the table or simply turn on the radio, since they're sound-activated ;)
The Unazukin dolls are created by Bandai, the company which also produces Tamagotchi.
The faces of my Unazukin dolls are made out of soy sauce-tinted quail eggs. The pink one is coloured with beet juice and the yellow one with turmeric powder. Their clothes are decorated with cheese (and salami) flowers and lettuce.
The other bento box is filled with boiled dumplings and chicken teriyaki/hot sauce/salad wrapper.