What are some noises / sounds that makes you feel cozy and happy for some reason?

We all have sounds that when we hear, we feel cozy. It feels great for some reason. You just want to stop and listen to that sound, close your eyes and just peacefully think. You, the cozy sound and your brain. Nothing else.

My cozy sounds are probably old laptop fans and car interior ambiance. These two really makes me cozy.

Tell me yours!