In Tuscany, Italy, there is an exciting group of "NÃ cchere" players, and while that translates to Castanets, you see in this video, they are and play like what others call rhythm bones. Shown in this video are Ido Corti on Tuscan Castanets and Eugenio Bargagli on accordion.
Click HERE to learn more about them and other "NÃ cchere" players.