Sanjana rishya mandal is my 11 years old student . She belongs to tribal community. She invented wooden pen and refills. We use regular ballpens and throw it after the use . It increased plastic waste on earth. Plastic is not degradable. Sanjana thought over this problem and decided to find out solution for it . She used dried bamboo sticks . Make hole in it . Put pennossel to one end of stick and fill ink through other end. Thus wooden pen and refills are made by her. It is very useful innovative . It will reduced the amount of plastic in waste .