I did a one year graduate diploma in secondary teaching, can now teach math, physics and IT.

I taught in Asia for a number of years, easy to find work there if you're a native English speaker.

Another option would be to take up a trade, painting house interiors is something that you can learn fairly quickly, don't need a lot of tools for, and can charge well for.

That being said, each sector has its downsides, trades are quite prone to the boom/bust economic cycle and there are no shortage of, shall we say, mediocre schools around