Dyeing your own clothes. People in the middle ages knew a lot about extracting and precipitating dyes from plants. I’m not saying we should all forage golden rod for summer dresses (yes I am) but dyeing ones own clothes should be more common.

I’m more inclined to buy things that aren’t my colour and I can keep clothes looking fresh longer with a $5 bottle of dye. I’m also way more aware of what my clothes are made of so they’re easier to colour, so I avoid synthetics that contribute to microplastic pollution.