After 1900, another accompaniment of natural yodeling became popular in Appenzell and Toggenburg: a practice called coin-rolling. A five-franc piece is rolled around the inside of an earthenware bowl, which is held on the palm of one hand and slowly rotated.
Three bowls of different diameter, used simultaneously, produce a sound reminiscent of distant cowbells, which harmonises well with yodeling. The coin rolling became a tourist attraction and is known only in Eastern Switzerland. But in our days the experimental yodeller Christine Lauterburg uses as well a conical milk bowl to accompany her own yodeling.