Like the mouse in the Clement Clarke Moore poem, this one isn't stirring, but he does make a sweet holiday gift or decoration, no cheese required.
First, use a serrated knife to cut a 2 1/2-inch Styrofoam egg in half lengthwise (parents only), then cover one of the halves with white acrylic paint and let it dry.
For whiskers, fold a 2-foot length of fishing line into quarters and tie a knot at the middle. Trim the ends to about 1 1/2 inches, then stick a corsage pin (available at craft stores) through the knot and into the narrow end of the egg half.
For each ear, cut a 1-inch circle from white felt, making a cut halfway through it, as shown above. Overlap the 2 sides of the cut and glue them together to create a curved shape. Glue a 1/2-inch pink felt circle to the center, then glue the ear in place.
Finally, glue on a pair of googly eyes and stick a 5-inch length of craft wire in place for a tail.