Well, perhaps self-reliance, small farms and domestic farming, energy and chemical production would be a really good idea.

The concept of using urine as a fertilizer dates back thousands of years...

https://plantgrowerworld.com/is-human-pee-good-for-plants-benefits-and-drawbacks-exposed/

i collect about 5 liters and strategically fertilize green growth in my area; it is also useful for diverting dogs and even making then run in circles, lol; obviously my urine is non-toxic;