Fish in the Garden
Indigenous peoples used "kitchen scraps" to enrich their gardens. They used fish a lot.
This short video from Brazos Forager on YouTube is a short and low-resolution discussion about how the indigenous peoples used scraps - specifically fish parts - to make their vegetables grow faster and better. It's a great trick that any angler with a green thumb can put to good use. It works as well now as it did 5,000 years ago.