The Automatic Earth's 2018 fundraiser also helps homeless and refugees in Greece.
See here and here.
To separate donations for Greece from those for the Automatic Earth (also needed!), amounts that end in either $0.99 or $0.37 go to Greece.
Our Paypal widget is in the top left corner of this site (bottom of page on mobile). If you don’t like Paypal, there's an address for checks and money orders on our Store and Donations page.