When attending a Japanese wedding, it is important to consider the traditional etiquette associated with giving money as a gift. The shugi-bukuro is an envelope traditionally used to give money at weddings in Japan and typically contains two bills - one larger bill representing the amount given by the giver, and one smaller bill representing the amount given by the recipient's family. The amount given in each envelope varies depending on various factors such as relationship between giver & recipient and financial situation, but typically ranges from 10-50 thousand Yen ($90-$450). In addition to giving money, other types of gifts such gifts cards & household items can also be purchased from specialty stores or online retailers catering specifically towards weddings in Japan. It is also important to follow certain etiquette rules when attending any type of formal event in Japan out of respect towards others.