Eco-pencil that grows

Name :
Aika Nakano
COUNTRY :
Japan / Tottori
AGE :
11
YEAR :
2015
PRIZE :
The Prize of the Commissioner of the Japan Patent Office
COMMENTARY :
When you have this one pencil, you will never need any more. This pencil grows like a tree. When you aren't using it, place it in some water and it grows back to its length before you used it. This pencil helps preserve the environment.
Eco-pencil that grows