We are now approved as an organization on github sponsors: https://github.com/sponsors/f-droid
We only have mirrors of our repositories on github, but if using github sponsors is a convenient way to donate to projects for you, feel free to use this.
The funds will be contributed to our #opencollective without any additional fees.
You can also find other options to donate here https://f-droid.org/donate/
To support this server and the OMN project https://opencollective.com/open-media-network