knick-knack
noun [ C usually plural ] (also nick-nack) uk/ˈnɪk.næk/ us/ˈnɪk.næk/
（尤指房子里的）小装饰物，小摆设
a small, decorative object, especially in a house
The shelves were covered with ornaments and useless knick-knacks. 架子上满是装饰品和一些无用的小玩意儿。