I honestly think a great investment would be to take 10 mundane household items chosen at random and do the same thing with them.
This is what happens when the number of billionaires doubles in 12 years. They can literally buy anything, so they do.
Sell a broom by Dr. Dre for $17,000.
Market a hammer made out of Tyrannosaurs teeth for $189,000.
Produce a bed slipper made of the down of an emperor penguin's newborn for $322,000.
Some dipshit with 9 yachts will buy them.