If you have puzzles that are missing pieces but you don’t want to trow them away, a creative idea would be to recycle them into a Kid Friendly Craft for Valentines Day.
First cut out a piece of cardboard into the shape of a heart. Then take the pieces of leftover puzzle and glue them onto the cardboard overlaying them to fit the heart shape.
Then take the heart and spray paint it in the color of your choice, red, white, silver. Of course with adult supervision!
Then you can write a greeting on the cardboard side of the heart and give to your special someone.