I know that for short term savings putting money into a government money fund is the safest and most secure way to make 4% interest. Set it and forget it. Auto buy. Go get it when you need it.
What’s the opposite? What’s a super risky way to save money short term that could result in massive gains at the risk of losing it all, but also in a set it and forget it way. Not daytrading or buying options where you have to manage it but something passive yet zero to 10x spectrum of outcomes.
Edit:
I know this is a terrible idea. This is mostly just a thought experiment. The impetus is that I was paying for apple care for an iphone and never used it. I figured, what if instead I put that money into a fund and tried to multiply it without concern for loss.