Vending machines and convenience stores are installed all over Japan, and we can anytime get bottle of water and soft water. The daily life, a large amount of plastic bottles that have been consumed, simultaneously overflow from the trash. It is not well known in Japan that a part of these lost plastic bottles float in the Pacific Ocean.
While studying a little like that, we held a workshop where we used a transparent, unique shaped plastic bottle for lighting with the teachers of the nursery.
When the light was turned on, kids said the light looks like ice.
