Necessity breeds innovation, no doubt on that. This might have been the reason why the designers and craftsmen ditched the traditional materials like clay to make jars and other containers and opted for a much more reliable alternative, glass. Glass may be fragile and difficult to handle sometimes, but this is the most voted on material for the manufacture of kitchen equipment and decorative models like flower vase.
Glass has the ability to keep the comments cooler and fresher for.longer durations. It helps a lot when you have to keep something preserved for long. From tea, sugar to all kinds of spices, you can store whatever your heart desires in these containers and use them according to your need.