we can donate as aurabin did, but how did he?
Likely aurabin donated 30 GBP directly by Paypal. That's the easiest and fastest way.
kalamatee is currently improving the graphics support for AROS. He also upgraded OpenGL support for AROS which is a really big deal for graphics developers! He will use the built-in graphics for the Ryzen cpu for the moment but he will need a standalone grahics card.
Any donations would probably go toward a nice graphics card of his choice to further development of the AROS grahics drivers.
I believe that when we bless others, we are also blessed in the process.