Prediction markets, sports betting, poker as well as ramping up personal expenditure on stuff and experiences.
I am so done with all the stuff which requires other people to think you are right in order to make a profit. That's not business anymore, it's politics. And I hate politics.
I'm tired of having to predict millions of variables that even if you get right for some miracle from above you could still be screwed up by the market because other people aren't seeing them or they are staying irrational more than you can stay solvent.
With prediction markets, sports betting and poker at least you have a finite number of variables and a finite number of enemies. You have to predict events with a finite date or duels on the court/pitch/track or the hands of other people and their tells. The more controversial your take, the higher the profit, and there is a moment set in stone for the showdown.
Spending money on stuff also brings in a profit especially if you have peculiar tastes and know where to look for the best deals for stuff. For example the vast majority of people book their vacations after they see a catalogue or an ad, so they all end up in the same place. I decided that from here on I will book my vacations using Google Earth. Finding the type of landscape that I like using Google Earth and from there compute how to travel there. I have found that in the vast majority of the cases you get to save a lot of money and a lot of miles (e.g. if you like tropical caves fly/drive to Mexico instead of having to go all the way across the world to Thailand)
That opens a whole new concept that in my opinion very few people understand, making money is just one part of the equation, the other is to avoid getting screwed of your hard earned money when you go and convert money into stuff and experiences which is something that sooner or later you'd have to do unless your goal is to be the richest guy in the cemetery.