You will be surprised to see how much PET bottles are sold in Japan. I have to admit that I also buy it once in a while, not often.
In that case, I like to use furoshiki, a type of traditional Japanese wrapping cloth, to carry the bottle.
Photo by Musubi
Furoshiki is a versatile cloth. Depending on how you tie it, it can be used like a bag or wrapping paper. When not in use, it can be folded and put away. Since there is a wide variety of size, color, pattern and materials, we can select it according to the time, the circumstances, and tea.
What would you wrap with furoshiki ? A bottle, a tea canister, or tea and sandwiches for picnic? It's up to you!