1) Long term investements which I almost never look at. Regular scheduled deposits going into an index fund.
2) Bets. Fun little side gambles which I always do for one purpose - aquiring something in the real world. Example: I want a new M1 macbook, but rather than drop $1k, I gamble $3k bitcoin. If it makes enough profit for the macbook, I sell immediately, and buy. If it drops, I just hang onto it until it goes up. But ultimately, this category of investment is never anything other than a bet, which I am OK losing. And, it's always a means to and end. I have a product in mind, and I justify gambling some money (which is fun) as a means to acquiring said product.