People underestimate the power of the olfactory when it comes to coaxing yourself to sleep. Melatonin has just given me schizo dreams so I started spritzing myself with a few calming fragrances right before bed and it really changed everything.
Not only is it a totally decadent and regal thing to do, it really does help you go to sleep. I go for Le Labo Ylang if I'm feeling really bougie but otherwise I'll do a dupe of Tom Ford Ombré Leather or Lust by Lush.
Speaking of Lush, solid perfumes are EXCELLENT for this as they smell great, last a long time, and it can take years to run out.