I put plastic in the recycling container instead of in the garbage.
I put cardboard boxes in the recycling container instead of in the garbage.
I turn off the lights when I leave a room.
I put cans in the recycling container instead of in the garbage.
I donate my old clothes for others to use them.
I write on the back of my paper instead of getting a new one.
I put paper in the recycling container instead of in the garbage.
I turn off the water when I brush my teeth.
I walk to school instead of driving.
I take shorter showers.
I refill my water bottle instead of throwing it away.
I use a lunchbox instead of a paper bag.