Mason jars are glass containers that are commonly used for preserving food. They come in various sizes and have a two-part lid that creates a tight seal, making them perfect for canning fruits, vegetables, and jams. Many people also use mason jars for storage, crafts, or as decorative items in their homes. In addition to their practical uses, mason jars have become popular in the DIY community. They can be transformed into lanterns, vases, or even drinking glasses. Their rustic charm and versatility make them a favorite among those who enjoy creative projects and sustainable living.