noise·mak·er 
/ˈnoɪzˌmeɪkɚ/ noun
plural noise·mak·ers /ˈnoɪzˌmeɪkɚ/ noun [count] US : a device (such as a horn) that is used to make noise at parties
▪ All the guests had noisemakers and party hats.
▪ All the guests had noisemakers and party hats.
