Lots of great ideas. I lived on an island for 2 yrs back in the late 1970's where some areas of the island had no running water, no elec, and for baths we used a roped off area of the lake by a small water fall. We also had outhouses. Maybe we could have a few of those.

As for food, there were fruts, veggies, coconuts, bananas, fish, clawdads, mushrooms, eggs, not just chicken eggs either, bird eggs too,bread, wheat, rice, all kinds of wild berries, even used part of flowers and so on. Some women even joined the hunt. Using bow and arrows or slingshots.

When there were any preggo woman, she was not allowed around the farm animals for fear of losing the child, she was not allow to touch any dead meat for the same reason.
In fact she was not even allowed to look at a dead animal untill it was cooked.

She did do a lot of other things while caring for the child such as washing clothes, farming, making clothes, teaching other kids, all the time with the baby strapped to her back with either a rope or some form of a papoose which Native Americans used all the time. And yes the men did help with all the kids, keeping them in line so one. It may take 2 to make kids, but it takes a whole village to raise them. Everyone helped out with the kids even if they were not the parents. There were even "wet nurses" where another mother would nurse the baby while the mother was sick.

As for the kids, yes I too think they should go on their own to pick up not just the mushrooms, but the shells and even help clean up the island, like the beach. Kids learn at an early age in most tribes to work.

The older women if they still had teeth would "chew" the animal hide to soften it to make things with it. Not one part of the animals were wasted. They even used the bones to make things.