Sponsorship
I've signed up to Github sponsors. I'm hoping that sponsorship will allow me to justify spending as much time on open source as I do.
It makes sense to sponsor a few of the projects you use regularly to ensure developers keep maintaining the code your business depends on. A business can sponsor many projects for a fraction of the price of a full-time employee.
Even if it's a token amount, it's a great way to say thanks. Honestly, it's appreciated!
As a freelance developer, I have paid work at the moment, so I plan to donate the first £200 (~$250) a month to charity.