Start a Blog, that can earn you money as a side hustle. Chose a topic of your interest and start writing. You can make money through affiliate marketing, selling product, AdSense etc..
Investing in real estate is the second best investment option after stock market. Do invest in real estate and earn money through rental income .
Money save is a money earn. Save more so that you have residual money that can further be invested .
Become a photographer if you like taking lots of photos. Chose the hobby and convert it into a money making machine.
Investing in stock market is the best option for making money. It is not that hard to learn how to invest in stock market. Do some research and acquire knowledge.
You will surely be able to create more than 1 income stream.