If you like Amethyst: Calming Oil, try Amethyst: Tranquil Lavender Candle.
Listen. I swear by this oil. I use it nightly on myself and my 2 year old son. It calms you immediately and lulls you to sleep. I also am able to sleep a solid 6-7 hours straight without waking up during the night. The rollerballs are long lasting because it does not take a lot to be effective. This is an amazing oil and I highly recommend!