I moved to partime work as my software job was getting boring and mind numbing.

Yes I ended up working remotely from a suburb where I could buy more land for my experiments and hobbies.

Now I am selling 3d printer filament that I manufacture in my garage lab:

https://medium.com/endless-filament/make-your-filament-at-ho...

I don't know about you but I like experimenting with processes and turning them into something that could be sold and something which people will pay for.