Take some sheets of craft paper and cut them into strips of one-inch width.
Now fold the paper strips into half and using the stapler, staple the paper strips at the folded portion.
Bend the two ends of the paper strip in the opposite direction so that we'll get a heart like shape. Reinforce the heart shape by stapling both ends.
Now staple another colored paper strip at the tip of the former heart shape and continue to staple until a heart paper chain is ready.