Crayon Heart Valentines. An old idea, but one that has not lost its "fun-easy-affordable" factors; especially when combined with a day of crafting with the kids. You can't put a price tag on that! Whipperberry makes it enticingly attractive.
Put crayon shavings (not too thickly) between 2 pieces of waxed paper. Iron lightly on medium heat between pieces of kraft paper to protect your iron. Stop when crayon shavings are melted and let it cool. Trace & cut out hearts of various sizes, string with silk thread & hang from dowel rod. Try Christmas trees/ornaments or Easter eggs/spring flowers too if you like.