I’ve done a similar thought experiment on this board a couple of years ago, “what if you had one billion dollars” and I see this thread may fall into a similar trap: many answers that don’t require a lot of money, or wishes that couldn’t come true even even with all the money in the world. For instance, why hasn’t Bill Gates already solved world hunger? Not for lack of money or trying.
So, the most interesting answers to me are those that stay inside these constraints, i.e. they take a LOT of money (and I mean, a lot ) and can also be accomplished. Owning something, sure. Supporting a cause? I guess that fits too, although you can’t be sure of the outcome.