Every time you toss a coin into the bucket you are going to hear that click. The variations comes from the different productions and interactions with the audience or volunteer. Then you got various ways to steal coins to make the productions endless.
Interestingly, McBride uses a simple gaffed coin to produce an endless supply of coins on his Manipulation Without Tears DVD. It's clever and simple but not as good as his primary routine.
I don't have this DVD, but a magician names Levent came out with what many consider to be the most complete collection of knowledge on the Miser's Dream. Check out his routine...