1, plastic wrap: put some water in a fresh-keeping bag, tie it up with a rope, and put it in a water-saving bag. Fill it up in turn, then put it in the refrigerator and freeze it. Just break the bag when you use it.

2, jelly box: use the eaten jelly shell, clean it again, then add water and put it in the frozen layer of the refrigerator.

3, burning wine glasses: use the kind of small cup that drinks soju to fill it with water and put it in the freezer.

4, beverage bottle cap: beverage bottle cap filled with water in the freezer can also make good ice cubes.

5, biscuit plastic boxes: many biscuit plastic boxes are divided into pieces, clean them, and then fill them with water and put them in the refrigerator.

Ice cubes:

Ice cubes generally refer to solid water made from liquid water after being frozen. Usually used to cool down or make iced drinks. According to the need, water can also be poured into the mold to make ice cubes with specific shapes, such as popsicles.

Pure water in nature will freeze at 0℃ under normal atmospheric pressure. If water contains impurities, the freezing point of water will drop with the increase of pressure. The melting point of ice is the freezing point of water, and with the increase of atmospheric pressure, the melting point of ice also increases. Naturally formed ice is called natural ice, and ice usually made by artificial refrigeration is called artificial ice, machine-made ice or industrial ice, among which there are many kinds of artificial ice, and commonly used ice includes industrial ice, edible ice and dry ice.

Ice is a transparent hexagonal crystal structure. Pure water will freeze at 0℃ under normal atmospheric pressure. If water contains impurities, the freezing point of water will drop with the increase of pressure, and the melting point of ice is the freezing point of water. With the increase of atmospheric pressure, the melting point of ice will also increase.