Here in Germany there is a growing movement for Unconditional Basic Income. In order to promote it a Not-for-Profit organisation is collecting money and giving it to people as a basic income. One way to support this project is by clicking partner links on shopping sites. To make this easier this extension gives you a hint once you come across a featured shopping site and offering you the link you need.
More about the project:
https://www.mein-grundeinkommen.de/
A direct link to the extension: