A great resource to refer to when using essential oils to support your overall health and wellness is the book MODERN ESSENTIALS. It's basically an encyclopedia listing all way to apply essential oils to support various areas of concern. It also come an a handy app format.
This is a blend I created after referring to Modern Essentials when I woke up with some tension in my neck and head. I was very surprised at how effective it was and now reach for this blend straight away when the same symptoms arise.
In a 5ml Roller:
5 drops of Peppermint
5 drops of Eucalyptus
5 drops of Frankincense
Topped up with Fractionated Coconut Oil