Wikipedia
Nafudakake
is a Japanese method of displaying all the names of the members in a group by collecting the names on individual plaques called and hanging them together in a specialized case called . Nafudakake can be found in traditional art forms such as chado, in modern art forms such as judo, at Shinto shrines (where they are used to display the names of benefactors) and in some modern organizations such as volunteer fire departments. In English, the term is most commonly associated with Japanese martial arts, and nafudakake are commonly considered an element of a traditional martial arts dojo.