Cut out 20 carrots from orange construction paper and glue on tops made from green construction paper. Plant them all around the house—under sofa cushions, in the silverware drawer, in kitchen cabinets, or taped to the refrigerator door. Send the kids out to collect the carrots, and let them redeem their carrots for snacks, such as a small box of raisins, a pack of gum, a bag of pretzels, or a piece of carrot cake.