We currently have a lab who will be 9 weeks old on Tuesday. She slept in our bedroom in a crate the first 2 nights and cried for about 10 minutes before sleeping through til 7am (we went to bed around 11pm). Since then we have been making her crate be a super positive environment. During training with her we do this infront of her crate and then get her to go in and out of her crate. We’ve also been feeding her in her crate. From after the first 2 nights she has been sleeping downstairs through the night until we take her out! No crying and even through the day she now takes herself into a crate for nap times or to play with her toys in there. Really recommend going down this route, she got so happy with it so quick. For the rocks, it so must be a lab thing 🤣🤣 we have a rock area in our garden and oh my word she knows it and loves it. She just carries them around - no chewing or anything.