Assuming you’re happy that yeast is definitely not an animal (it’s a fungus….I double-checked) then Zoa is an animal-free alternative to leather. as far as I understand it there’s a bit of DNA cut-and-shut which is re-homed into little yeast cell factorys which grow the Zoa. No animals so no expensive feeding of animals and no expensive and ethically-open-to-discussion killing animals. It’s been in development for years and is finally being tweaked and embodied into products as we speak. Sadly not by us (yet) but we hope to get our hands on some soon. We’re always looking for more materials to add to our library.
Website link: Zoa by Modern Meadow