One of the biggest lies in rich people spending money buying yachts, lambos, and other luxury goods is that they are sending the money back into the economy.
They aren't. They are keeping money in their circle of luxury. Those things don't use the same materials and people that make up most of the economy. You can't put regular gas in it, you can't go to John Doe Mechanic, etc. The money stays in a bubble above the rest of us. There is no trickle down effect. Trickle down effects have been scientifically disproven, at least in the purest, free-market capitalist version of it.
So yeah, I'm going to judge you and put you on trial for spending money of luxury items like that. I don't care if you've always liked cars. The people who would take a lambo or something like that out and use it in the ways that made all that expansiveness and speed useful are a minority, even in the small group of rich. I'm not saying those items shouldn't be made (although you should take a hard look and ask what that intelligence and money could be spent on, like better, cheaper, environmentally friendly transportation for the masses), but I am saying 99.9999% of people have no business buying them.
The sort of spending money that actually feeds back into the economy and helps?
Travel. Not to expensive resorts but just to cities. Eat with the regular people. Travel with the regular people. With all your cash, you'll still be able to pay for conveniences most of us could never dream of. But just go places instead of buying luxury objects.
Nonfamous craftsman. Support the arts, not your high end shit, but the local artists who are just trying to make it. The ones who put their heart into their work as well as the little time they have between their real job. Go to food trucks and local restuarants who are struggle to share their passion of food. Go to geeky conventions and fairs and pay for the amazing work that fans and geeks do. Better yet, you offer them enough money and they will make you whatever you want, especially if you're willing to front the bill so they can get materials. You have the money, give it to those who still need to make it.
Charity. Duh. Always. You get huge tax breaks that the rest of us can't afford. Take advantage while making a real difference. Research your charities to ensure they are going directly to help people. Better yet, start giving money to the homeless. You really think you're going to use it for something better than someone who has nothing?