What did people use before ziploc bags?

Before Ziploc bags were invented in 1968, people used a variety of containers and wraps to store food and keep it fresh, relying on reusable and natural materials. Common alternatives included wax paper, parchment paper, and butcher paper wrapped around food and secured with string or tape, tin foil or aluminum foil which became popular in mid-20th century for wrapping sandwiches and leftovers, glass jars such as mason jars for storing leftovers, pickles, and preserves, metal tins and lunch boxes for carrying food, and ceramic bowls covered with plates or cloth. Many households used beeswax wraps, cloth wraps, or damp towels to cover bowls. For refrigeration, people used reusable metal containers, Pyrex glass containers with lids, and cellophane wrap introduced in 1920s. Paper bags were used for lunches and produce. Before refrigeration was widespread, food was stored in root cellars, ice boxes with block ice, or preserved by canning, salting, smoking, and drying. Waxed cloth and oilcloth were also used. Ziploc bags became popular because they are cheap, lightweight, transparent, and sealable, replacing many of these older methods that required washing and were less convenient for disposable use.