You are already into development so why not get a freelance project, yes, you don't have to be an employee but just look for those projects that allows you to work in flexible times. There's one thing that came to my mind, it's not on your stuffs that you like neither in you don't like.
But as per your condition, you are only good for the micro investments. This has been proven to be one of the best investments in the world, of course not a scam or what and it's outside crypto which everyone aims to have.
When I say micro investments I mean I can only make rather small investments at the moment. That could change later. Anyway, it is usually more easy to invest in tokens or crypto than a lot of other stuff.