Give each child a brown paper lunch bag. Set out crayons, markers, googly eyes, pom-poms and any other art materials you can find. Show children how the bag becomes a puppet once your hand is inside, with the bottom flap of the bag becoming a face. Ask each child to choose one feeling that she has often and make the puppet look like it's having that feeling. When children are done, keep the puppets in the classroom. When a child is angry or crying, ask her to show you which of the puppets feels like she does.
On a sheet of paper, draw a grid of four, six or eight blocks, depending on how adept your preschoolers are at talking about feelings. At the top of each block, write the name of one feeling. Photocopy the sheet and give one to each child. Starting with the first block, show children what the first letter is and ask if they can guess the name of the feeling. Allow each child three or four minutes to draw a picture of what he looks like while he has that feeling. Repeat with each block. Hang the posters in the classroom.
Pass out magazines, scissors and glue. Give each child a sheet of white paper, or tape a large sheet of paper to the wall so that the class can make one large collage. Ask children to look through the magazines and cut out any pictures they find of feelings. After children have glued all these pictures onto their posters, ask each child to share her collage with the class and point out some of the feelings she found.
Show examples of greeting cards and read the inside messages. Ask children what kind of feeling a person might be having when the sends that card. For instance, a person sending a birthday card is feeling love and happiness, while a person who sends a condolence card is feeling sad. Pass out construction paper and markers and ask children to make their own cards for a friend or family member. Ask each child to draw pictures that demonstrate her feelings for the recipient. Mail the cards to each recipient.