Sundries case is a term used to describe a small box or container, usually made of metal, that is used to store small items such as jewelry, coins, and other small items. The term sundries case is also known as an ETUI, which is a French word meaning 'small case'. ETUI is the four letter solution to the crossword puzzle. Sundries cases are often decorated with intricate designs and can be used as decorative pieces in addition to their practical use.