Miser's Dream[1] is a magic routine where the magician produces coins from the air (and often other places) and drops them into a receptacle they are holding, usually a metal bucket.
[2] It has also been called "Aerial Treasury".
It was invented in the 19th century and popularized by T. Nelson Downs circa 1895.
The trick is considered a crowd-pleaser, with an easy to follow plot based on a common desire.
Its secret method usually involves palming.