Stickers
Forty small stickers about the people who make your coffee. Flip through, keep the ones you like, print them yourself.
Sticker 1 of 40: Handmade, one at a time, by someone with a name.

Print the whole set
Two A4 sheets, twenty stickers each, laid out for kiss cut vinyl. Any print shop that cuts stickers can take these files as they are.
Where they go: your laptop, your bottle, your own counter. On a cafe door only when the owner says yes. Never on street furniture.