These kind of illustrations are also used for our New Year's card. They are believed to bring happiness.
This is "Kagamimochi".
This is "Osechi".
These three things ( Kagamimochi,Osechi.Otoso) are "Must" things when we celebrate new year in Japan.
"Kagamimochi" is a large,round rice cake offered to the gods at New Year's.
"Osechi" is Japanese traditional New Year's cuisine.The box resembles bento box.
"Otoso" is sake. Otoso is drunk to flush away the previous year's maladies and to aspire to lead a long life.