Eugen is a user on mastodon.social. You can follow them or interact with them if you have an account anywhere in the fediverse.
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Guess what, #Mastodon t-shirts! https://www.designbyhumans.com/shop/t-shirt/men/mastodon-t-shirt/924252/ Thanks @dopatwo 😄
@forteller @dopatwo $3 per shirt, but for me it's more about having people raise awareness about the project by wearing these shirts than gaining money from it 
@gargron @dopatwo Sure! And that's great. But it's even better if the money goes to you too :) And I couldn't find anything on that page about the environmental or human impact of the production. I'd love it so much if you'd get this/a shirt on @aptgetshirt. I have an Inkscape shirt from them and it's awesome! :) Fair production and 50% goes to the projects!