Can you give me an example of a common, legitimate $10,000+ cash transaction? Elsewhere I gave the example of my mom transporting transporting a ton of money in

Can you give me an example of a common, legitimate $10,000+ cash transaction? Elsewhere I gave the example of my mom transporting transporting a ton of money in cash for the initial down payment of a house, but that was 40 years ago. Nobody does that anymore for good reason; there are far easier, safer and more practical ways to handle that kind of transaction.