If you are young and there's nothing you really want to do with a significant amount of money, your emergency savings are decently big, and you don't intend to make a significant purchase in the near to mid future, then you find yourself a tax-free retirement account, a world index fund and an S&P 500 index fund and distribute money across them with the priority being reaching whatever is the max in the first one
Unironically anon has cracked the big secret of capitalism; the end goal doesn't matter until someone is trying to steal it from you, and they will try because some people are sick in the head
Or if you like something more adventurous, put half into developing a time machine and then half into repeating bitcoin speculations, accumulate them on a secure usb drive with s password protection, forget password and then give teams of world renowned hackers limited tries to break it. I've read about the last part a couple of months ago. They bought the same drives and claim that they reverse engineered them on a hardware level to get the idea how their software protection works. Yet, there just two tries left and the guy is not fast to reach an agreement.
God this was me when I lived at home. Now 70% of my paycheck goes to my landlord. I'm still able to save because I'm frugal as heck but holy shit it would be so much easier without my landlord fucking me in the ass monthly.