Shūgi-bukuro
A shūgi-bukuro (祝儀袋, lit. 'celebratory gift bag') is a special envelope in which money is given as a gift of celebration in Japan, especially at weddings or other auspicious occasions, such as a birth or celebrating a new home. The giver inserts the money into a shūgi-bukuro on which they have written their name, and the amount of money inside.