It might not make for the creepiest Halloween lawn display, but green burials, and specifically human composting, is an environmentally conscious, life-sustaining option that’s now legal in 14 states, most recently New Jersey. But how does a human composting vessel work? At Return Home, loved ones can decorate the human composting vessels with images and mementos at a “laying-in” ceremony. Image: Return HomeInside the human composting vesselHuman composting vessels vary in appearance, but the ones at Return Home look less like futuristic pods and more like simply engineered rectangular boxes. After 30 days in the human composting vessel, the body has turned into about 250 pounds of nutrient rich soil.