What ridiculous thing would you spend billions on?

A wizard has cursed you with billions of dollars! Why is that a curse? Because unless you spend it immediately* on something ridiculous** you'll become like the worst, asshole-iest billionaire you can think of. (Fill in your own blank).

Saving the world is out, philanthropy is out (unless it's utterly ridiculous), clever tricks to make the world better by finding a loophole and trying to outwit the wizard's curse are out.

If you try something that could be started with an "um actually" 🤓☝️you end up naming all your children and companies with the same letter before the end of the day, got it? Spirit of the rules!
I'm watching you. ತ⁠_⁠ʖ⁠ತ

*A project might take time but you're going all in on it, cash up front
** The point is that it's pointless. It might be accidentally useful but it's pointless.

ETA: I have been unjustly rate limited and will be replying when I can. Please take this opportunity to reconsider your charitable works and other attempts at public good and get back to airships and Animorphs movies. Ty