I always like passive means to earn money without actively engaging in work. You don't need to overstress yourself. Like online you can do this by referring people to get commissions, joining affiliate marketing,doing real estate investment, creation and sale of online courses.
Another area is by stock marketing, you can invest online do blogging or YouTube channels, automated online businesses, Even publishing and getting royalties from intellectual property.
you can generate income without spending much time on it and you earn passively.