• banana
  • potassium: for some energy-boost
  • tryptophan and vitamin B12: helps combating insomnia or other-related sleep behaviors
  • helps our body to produce endorphins, hence eating a banana increases our level of happiness
• watermelon
• avocado
• tomato (a carotenoid, will be helpful for glaucoma)
• mango
• papaya

To be continued

Sources: http://care4yoursleep.com/top-5-foods-for-good-sleep.html