An Australian percussion instrument used for playing bush music; a long stick with bottle caps nailed loosely to it; played by hitting it with a stick or banging it on the ground WordNet 3.0 & Open English WordNet

A monkey stick is a traditional English percussion instrument, used in folk music. Wikipedia

Called mendoza or mendozer, a traditional English percussion instrument Wikipedia Disambiguation

A generally homemade percussion instrument consisting of crown cap beer bottle tops loosely nailed to a pole (often a broom handle) and a board mounted cross-ways on the pole (the head of the broom), and played by striking the pole on the ground or with a stick, by drawing the serrated stick across the pole, or by shaking the instrument. Wiktionary