The genre of material culture includes all artifacts that can be touched, held, lived in, or eaten. They are tangible objects with a physical presence, either intended for permanent use or to be used at the next meal. Most of these folklore artifacts are single objects that have been created by hand for a specific purpose; however, folk artifacts can also be mass-produced, such as dreidels or Christmas decorations. These items continue to be considered folklore because of their long (pre-industrial) history and their customary use. All of these material objects "existed prior to and continue alongside mechanized industry. … are transmitted across the generations and subject to the same forces of conservative tradition and individual variation" that are found in all folk artifacts. Folklorists are interested in the physical form, the method of manufacture or construction, the pattern of use, as well as the procurement of the raw materials. The meaning to those who both make and use these objects is important. Of primary significance in these studies is the complex balance of continuity over change in both their design and their decoration.