Lavender is an oil I use quite a bit. I use Lavender at night. I rub a couple of drops on the bottom of my kids feet and they fall asleep quicker and have a more restful night.
Here is a lil more info on Lavender Essential oil:
Lavender has been cherished for its unmistakable aroma and therapeutic properties for thousands of years.
Widely used for its calming and relaxing qualities
Soothes occasional skin irritations
Helps sooth irritated skin
Eases muscle tension in the head and neck
You can purchase this oil as a single oil or in a pack. My favorite is the physicians pack. It has everything you need in your first aid kit!