SOME SUNNAH OF SLEEPING

Hazrat Anas Radiyallahu Anhu narrates that Nabi Sallallahu Alayhi Wasallam said,
"The person who loves my Sunnah loves Me, and the one who loves Me will be with Me in Jannah." (Jamiut Tirmizi, vol 2 pg 96)

Extinguishing burning flames or lamps before sleeping
Sayyiduna Jabir Ibn Abdullah Radiyallahu Anhuma narrates that Nabi Sallallahu Alayhi Wasallam said,
"When you intend going to bed, extinguish the lamp, seal the water skin, close the door and cover food items." (Ibn Majah pg 243, Sahih Muslim, Sahih Muslim)

Keeping the Miswaak at the headside
Sayyiduna Abdullah Ibn Umar Radiyallahu Anhuma narrates:
When Nabi Sallallahu Alayhi Wasallam would take rest, His miswaak would be at His headside. When Nabi Sallallahu Alayhi Wasallam would awaken, Nabi Sallallahu Alayhi Wasallam would immediately use the Miswaak. (Musnad , vol2 pg 117 Sublime Conduct p20)

Using the miswaak upon awakening
Ummul Mu'mineen, Sayyidah Aayesha Radiyallahu Anha narrates:
Whenever Nabi Sallallahu Alayhi Wasallam awoke, whether it was during the day or night , Nabi Sallallahu Alayhi Wasallam would always use the Miswaak first and then perform Wudhu. (Sunan Abu Dawud, Sublime Conduct)