Children day Celebration

My school just celebrated Children's day last two days ago although it isn't the actual day yet because it is on a Sunday. As it is on the same day as recycling day, everyone needed to have a stamp to get a prize if you win the game . You can get 1 stamp by giving 1kg of newspaper,5 cans,5 bottles or 3 cd holders. I did not have any of the follo9wing materials but who cares, its already over.