Teach your kids the art of quilling, a decorative paper-rolling technique, then round up a set of these message-bearing spring icons.
For each, start by cutting a few dozen 1/8-inch-wide strips of colored paper, each at least 4 inches long. Curl each strip tightly around a toothpick.
Next, cover a rounded, 3-inch card stock body with glue and attach the curls. Cut out a card stock face and ears, adding googly eyes and other facial features, and glue them all in place. Allow the glue to dry.
For the legs, which also serve as note holders, glue 2 clothespins to the back of the body. Stand the critter on a table or attach magnetic strips to the back and stick it to your fridge, then post your message in the clips.