I operate a tithe and give approx 10% of what I earn to causes I believe in. These are not all charities, and some include one-off donations to OSS projects. I

I operate a tithe and give approx 10% of what I earn to causes I believe in. These are not all charities, and some include one-off donations to OSS projects. I typically choose privacy and security related projects, individuals, and causes, these can be big projects like Signal, or regular donations for things like https://www.openrightsgroup.org/ https://www.openrightsgroup.org/ , or random donations to smaller projects (that are sometimes individuals and mostly OSS but it being OSS isn't the core criteria). I also include small charities that do things like refurbish old company laptops by servicing and installing Ubuntu and then providing them to schools and causes that cannot afford them. It's mostly stable with a little scatter gun, I keep track in my monthly budget and just hover around that 10% mark. When I sold shares, I did extend the tithe to that too. Edit: I am not religious but did learn of tithes when I was young and it seemed like a good thing that some religions do and I figured that if I started when young I'd never notice it. Mostly I don't notice it (though when I was saving for a mortgage I did stop and think I would've achieved it a lot sooner were I to not have the tithe - I stopped for a few months when I moved but slowly restored it).