Chajchas, Chak'chas or Chapchas. An aboriginal rattle instrument from the central Andes region. Some relevant links:

https://en.wikipedia.org/wiki/Chajchas

https://web.archive.org/web/20131021004159/http://kuntur_huasi.en.eresmas.com/instrumentos/chajchas.htm

https://makingmulticulturalmusic.wordpress.com/2013/05/24/chapchas-a-rattle-made-from-the-toenails-of-goats/

https://dbpedia.org/page/Chajchas

https://instrumentosetnicos.org/instrumentos-musicales-percutidos/sonajeros/chas-chas