Gather a number of items from around your home or classroom, yard sale stickers, crayons or colored pencils and fake money. Let the students put prices on the stickers and mark the items to the best of their abilities. Give each child some money and allow them to decide who will sell and who will buy the items. Be sure to use terminology like, "reusing" and "reselling."
In a sand table, cover some fake vegetables with sand or soil. Give seeds to students or use little beads to represent seeds and have the students plant them in the sand table. Allow the students to use small plastic gardening tools to rake the soil and have them water their seeds with real water or by pretending. After they have done these steps, they can dig to find the vegetables. Talk with them about growing their own food at home during this activity.
Set up an area with a wash bin, doll or baby clothes, empty laundry soap boxes, clothespins, a clothesline and possibly a cardboard box washing machine. Show the students that they can conserve energy by hanging up their clothes on a clothesline, whether they choose to hand-wash clothes or put them in the washing machine.
Set up a town for children to play in by drawing locations like grocery stores or homes on big pieces of cardboard or set up existing larger play sets. Provide the children with ecologically conscious choices for transportation such as small skate boards, tricycles or pretend ponies and instruct the children to use these items to travel or to walk between the stations.