Winter is coming, and the thermos cup is a must-have daily necessities for many people. A cup of hot water, a cup of hot tea, and a cup of hot coffee can make you feel warm and comfortable in cold weather. But a thermos mug isn't just for hot drinks, it has a lot of other great uses that can even help you save money. 
If you have some old thermos cups at home or don't want to use, don't throw them away, they are more "valuable" at home. Below, let me tell you about these magical uses of thermos cups. First, the insulation principle of the thermos cupFirst of all, we need to understand the principle and material of the thermos cup. The thermos cup mainly uses a vacuum layer to isolate the transfer of heat, so as to achieve the effect of maintaining the temperature. 
The inner tank of the thermos cup is generally made of stainless steel or glass, and the outer shell is made of stainless steel, plastic or ceramic. The material of the thermos cup will affect its thermal insulation effect and service life, so we should pay attention to the following points when choosing a thermos cup:
1. Choose a thermos cup with a stainless steel inner tank, because stainless steel is not easy to rust, will not affect water quality, and is more durable. 2. Choose a thermos cup with a stainless steel or ceramic shell, because these materials have low thermal conductivity, which can reduce heat loss and is more beautiful. 3. Choose a thermos cup with a high vacuum degree, because the higher the vacuum degree, the better the insulation effect. We can look at the bottom of the thermos cup to see if there is a small hole, if there is, it means that the vacuum is not high, if not, it means that the vacuum is high. 
4. Choose a thermos cup with moderate capacity, because if the capacity is too large or too small, it will affect the heat preservation effect. Therefore, a thermos cup with a capacity of 300-500 ml is more suitable, the insulation effect can be longer, and it will be more convenient to carry. 
Second, other uses of thermos cupsOf course, if you already have some thermos cups, but for various reasons, you don't want to use them for hot drinks, then you don't need to throw them away, put them at home and let them play other roles, and you can save a lot of money in a year. 
1. Fill with cerealsEveryone usually buys some whole grains, which can be used to cook some nutritious food in daily life. However, whole grains are also susceptible to moisture, insects, and spoilage, so we need to store them properly. The thermos mug is a good storage container, which can prevent whole grains from coming into contact with air and moisture, prolong their shelf life, and also make it convenient for us to access at any time. 
2. Fill with sugarWhite sugar is a commonly used condiment in our cooking and baking, it can add sweetness and flavor to food, and it can also provide energy. However, white sugar also easily absorbs water and becomes a piece, affecting use. The thermos cup can help us solve this problem, it can keep the white sugar dry, prevent clumping, and can also avoid the white sugar from being infested by ants and other small insects. 
3. Fill the tea leavesTea is a drink in our daily life, it can refresh the mind, quench thirst, reduce fire, maintain health, etc. The quality and aroma of tea depends largely on how it is preserved. The thermos mug is a good tea can, which can prevent the tea from being affected by light, heat, moisture, and peculiar smell, keep the freshness and quality of the tea, and also allow us to make a cup of fragrant tea at any time. 
4. When a vaseThermos mugs tend to have a delicate appearance, with a variety of colors and patterns, which can be used as an ornament to add to the beauty of the home. Therefore, if you have strong hands-on ability, you can make some decorations for the thermos cup, and then use it as a vase, place some flowers or dried flowers, and add some color and atmosphere to our lives. The advantage of the thermos mug is that it can maintain the water temperature, prolong the life of the flowers, and also prevent water leakage and keep it clean. 
5. Fill with nutsNuts are a kind of snack that we often eat, they are rich in fat, protein, fiber and other nutrients, which have many benefits for our body. However, nuts are also prone to spoilage, softening, and sourness, so we should take care to preserve them. The thermos mug is a good nut jar, it can keep the nuts dry and crisp, prevent the nuts from spoiling, and also allow us to enjoy some delicious nuts at any time.
In short, the thermos cup is a very practical daily necessities, it can not only be used to hold hot drinks, but also can be used to do many other things, making our life more convenient, more economical, and more interesting. And you can also use your creativity to use the thermos cup for other things, such as doing handicrafts, making lamps, making pen holders, etc., so that the thermos cup can play a greater value.