Here’s a fun paper chain in heart shapes… Cut 1/2" or 3/4" strips of construction paper about 10" long. Form each of these into a heart: fold the strip in half, fold about 3/8" of each end in, then tuck the ends together into the center fold... voilà, a heart! - glue at the junctures. Then cut more strips of about 3" lengths... Make them into links that hold two hearts together.

(See also Gum Wrapper Chain, Jacob's Ladder Chain, Paper Rickrack)