A small glass vial is the perfect example of this. They can also be used as essential oil bottles, or as a glass vial, it is the perfect way to store drops or essentials in a glass jar. Source a wide variety of shapes, sizes, and colors from Alibaba.com to small essential oil bottles.
The big plus of these small glass vial is that they can be recycled, infinitum, a blend of the two things to make glass more attractive, and cherished glass objects. The glass vial is an ideal container to keep a candle jar hot or cold for and long-lasting use.