For convenience and easy scaling up I suggest you go for online type of work.But to recommend directly what specific thing you to do would be too difficulty.If you actually have some skills then I suggest you draw more close to that which you are already good at.If not start searching for some courses that are almost free and maybe spend $40 to be certified in 2 to 3 courses.
Offcourse you are going to need a traffic source so build your followers both on social media and on a blog or website.Then you can commerce with that business.
Just to give you a hint on what is working already,affiliate marketing is working,freelance services is working, in various skills such as web development,programming,cartoonist,copy writer,content creator,transcriber,translator and so on.