We don't have synonyms for noisemakers yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are noisemaker and noise makers.
(n) :
A person or device that produces a great deal of noise, especially one used in a celebration or sporting event.
(n) :
A device comprising a handle with a ratchet at one end, with the ratchet end contained within a box that serves as an echo chamber, so that swinging or moving the device causes the ratchet to rotate within the box, creating a series of loud clicking sounds
(n) :
A person or device that produces a great deal of noise, especially one used in a celebration or sporting event.
(n) :
A device comprising a handle with a ratchet at one end, with the ratchet end contained within a box that serves as an echo chamber, so that swinging or moving the device causes the ratchet to rotate within the box, creating a series of loud clicking sounds