Heyo. My thoughts:
1) Mining/Staking/Masternodes
2) Airdrops/Bounties
3) Shorting w/ leverage
4) Arbitrage
5)...
6) MacDonalds
Anything else?
These days really good for keeping yout portfolio on TUSd. or you can do short buy and sell. day trading. if you get 10% profit then sell it. we can not expect big green days.