What is the smartest goods to invest in if you have a large income?

If I have an income of over $100.000,- per month, what would be the safest yet most yielding goods/stocks to invest in? Putting it in the bank is a stupid investment in my opinion. Not only do you run the risk of the bank going out of business, but the interest rates aren’t really all that eiter.

I have heard silver is smart to buy, and real estate. Any other suggestions or elaborations on how I should invest that kind of money to make the most of it?