With the rising trend of cryptocurrency, I came across various people earning money in the cryptocurrency space, these are the trends that I have seen:
Bitcoin Mining where you would solve mathematical equations to earn cryptocurrencies
Trading speculative cryptocurrencies by taking advantage of volatile swings
Create and mint Non-Fungible Tokens (NFT) where you would create art to be sold to users
Create your own altcoin where you would join with developers to create a coin
However, these markets are still in their incubating stage where regulation is limited and potential loss of capital is present. Therefore, it is advisable to assess your risk tolerance before venturing into it.