I'v been using pine shavings inside the coop and wood chips in the run. My girls are getting ready to lay, I've had one or two do the squat for me. I want to prepare the nests now so I have questions about them. I see people say use straw cuz it's hollow and warm. Others say hay. I'm uncomfortable with either for fear of crop issues. I already have one gal with crop issues and I've never used hay or straw. Are pine shavings suitable for the nest as well as the coop roosting area? Also, I have some ornamental marble eggs I'm considering using rather than buying another fake egg. Will it be too cold to use because it's marble? Or too heavy? Don't want to confuse my girls.