My partner's sister had a wonderful homebirth for no.2, had own pool and everything...
However, they made the rookie mistake of not emptying it asap, and left it overnight...not noticing the small leak
.
In the morning it had flooded the downstairs, and all of their wooden floors were buggered- kinda took the edge of their cheerful lentil-weavery post birth glow!!
On the placenta side of things, my Dad did the full on hippy in the 80s anti-Thatcher thing in Manchester, and one of his friends did indeed cook and eat her own placenta. She was otherwise a very strict veggie...