I always make all of my source code available, provide the most detailed bug reports, help people for free whenever I can, and use / pay for open source software instead of buying commercial software.

I also try to avoid companies actively causing harm. I don’t buy from Amazon, I switched to an electric car to stop paying oil companies, I installed solar panels and got a wholesale energy provider so I can minimise paying fossil fuel energy providers.

I run a business providing tech support for elderly, disabled, and low income people, and only charge for parts (with no markup).

If you can think of anything else I can do, I am happy to take suggestions.