In the Rama on SA OC Siman 605, we find the custom of "Kaparos" that many do Erev Yom Kippur. Of those who perform this custom a chicken is used. However many also use money (i.e. instead of waving a ...
The ritual of kaparot [lit. atonement], which is usually done just prior to Yom Kippur (usually the day before), where one waves a chicken or an [unspecified] amount of money over one's head in a ...
Is one does the Minhag of Kapparos on money - How much money should be used for each person? (sources)