I have a ritual for at least 15 years that consist of putting some Shrimpsons episodes for sleeping. I really enjoy this moment when I feel sleepy, going to bed with a bowl of cereals and watching some episodes before sleeping. I have seen the entire show many times since then but I don't care. I don't even watch, but just having it at low volume really help me to sleep. The computer is programmed to go to sleep after one hour so that I am not disturbed by its light when I'm sleeping and when waking up.
I prefer by far the first seasons, especially for that nostalgia feel.
Have you got some comforter rituals like this for sleeping ?