I love these adorable quirky paper puppets - with mouthes that open and close with a clothespin! Love this unique, easy clothespin craft for kids (or adults). It includes a free printable for the faces, which you can then color in, and add yarn and googly
Use this as a basis to compile sample activities to do with students to conserve the Earth, these include: plant a tree, recycle, turn off the lights, and clean up trash. The others are good ideas to simply introduce the students to.