![[Housework hack] How to make a "PET bottle that you can drink immediately and keep it cold"--A device without freezing](https://image.enuchi.jp/upload/articles/7435/790ea0752dfd50bdaf1b8cd8e6b12233_special.jpg)
[Housework hack] How to make a "PET bottle that you can drink immediately and keep it cold"--A device without freezing
A frozen PET bottle that can be used outdoors under the scorching sun. By devising and freezing it, I tried a trick to enjoy a cold drink until the end.
