You have learned all most all the lessons of life in your school in addition to that your mentors become your ideal in life when they teach you the lessons. The teachers or mentors can be considered as the one of a kind mom or one of a kind dad. So their birthdays are equally important and special for you the same way your mom’s or your dad’s birthday is valuable in your life. 
Apart of congratulating your mentors or teachers on the occasion of teacher’s day you should also remember their birthday and wish them with eco friendly Birthday present. Eco friendly birthday present is more suitable for the mentors who have taught you with the social science and the environmental science lessons. They will be delighted if you choose an eco friendly birthday present for them on their birthday. What is the first thing that strikes a student’s mind when he or she desires to buy an eco friendly Birthday present for their mentor or teacher? Planting tree or a small flower pot or vase is considered as an eco friendly item but then you do not have the option of planting a tree at your mentor’s house on his or her birthday so what you can do is buy a small stem of flower in a flower pot and give that to her on her birthday as an eco-friendly birthday present for her.