Mason jars are traditionally used for food preservation. Today glass mason jars are much more versatile and used for a variety of creative ideas. Score promotions offers a collection of custom mason jars used as candy and beverage holders, gifts, or even decorational items. Custom mason jars come in different sizes to choose from; to suite youâ€™re many needs. Selected custom mason jars come prefilled with chocolate. Great for holiday gift ideas to special clients or customers!