Inspiration: https://www.ascus.org.uk/blog/photography-meets-ecology
Instructions
https://michaeladavidova.com/Blog-Plant-based-DIY-developers From: coffee, tea, urine, plants, + vitamin C
Useful links
Everything for analog photo development: https://www.fotoimpex.de/shop/fotochemie/moersch-eco-4812-papierentwickler-ohne-gefahrstoffe-1000-ml-konzentrat.html