Place the soy wax flakes in an old aluminum can (if it doesn't all fit, add as much as you can and add more as the wax melts)
Fill a saucepan halfway with water and place the can of soy wax in the center. Allow the water to simmer until the wax melts completely.
Remove the can and place your kitchen thermometer in the hot wax. Check the temperature every few minutes until the wax cools to 185 degrees (it doesn't have to be exact, but a slightly lower temperature is better than higher).
Add your essential oils and stir to combine.
Place the wick in the center of container and use a clothespin or chopsticks to keep it upright.
Pour the wax into the container and allow it to cool for several hours, or overnight, before lighting.
Any essential oils will work for this, but my favorites are: