Yarn
This is: durablegood, material, good, tradable
Spinners
makes yarn from 
work, 
wool, 
shiitake, 
balm
2 terrains use yarn to make 
clothes, 
rug
2 terrains are built with yarn
Commodity info
Weighs 2
8% is
lost every year
Serves 1000k people a year
Satisfies 3% of a city's durable goods needs a year