Inquiring Minds Want to Know....re: spoils of crime

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This is an odd question, but I really am interested in the answer. Perhaps it's just another factoid in a stream of useless trivia, but the answer might be of interest.

What happens to the spoils of crime when a criminal is arrested and eventually found guilty? Specifically, things like money, drugs and weapons? I'm assuming that the drugs are destroyed and perhaps the weapons are also destroyed eventually, but do they destroy the cash as well? If not, who gets it--if anyone? Does it sit around the evidence room for a hundred years or so gathering dust, or is it donated at some point to a local or national charity? Is it divided up among the officers at a precinct, used for some elaborate party, used perhaps to buy equipment for the precinct or some other such cause?

Is it absorbed into the city's budget? Or if it's a federal bust, the national budget?

I know that there are police auctions for other confiscated materials, such as cars, furniture, and other such items, but it would be difficult to auction off cash!

Anyone who has any knowledge of this subject? Would love to know.