Wikipedia
Trejdeksnis
Trejdeksnis (also known as trideksnis, trīdeksnis, strīzdeklis, strīzdiķis, trīdēkslis) is a Latvian percussion instrument. It consists of a wood handle running through three increasing width tiers of flat horizontal discs, with small triangular metal rattles hanging off the edges of the disks. In NBC series Community, the trejdeksnis is played during a Latvian independence day parade in episode Conspiracy Theories and Interior Design.