Make a balloon heart by knotting the ends of the balloon together. Place
your thumbs inside the balloon, one at knot and pull hands apart to find the center.
You can make great bonging noise by pulling it in this way. With little fingers
together place one hand on either side of the center you just found. Using your
body to keep the balloon straight pull down to form the heart shape. Transer at
the top into one hand and grip tightly, use the second to pump air though the
obstruction of your hand into the rest of the heart. Release the balloon and you
will have a heart.