Clam shells, cockles or shells from your vacation can all be incorporated into hearts for Valentine's Day. Use your photography skills to make a photo or greeting card by laying seashells on the beach. Trim a heart-shaped box with your favorite little shells. Strung cockle shells look amazing turned into a heart.
Whether you use all one color/style or mix them all up -- a handmade Valentine made of seashells will be treasured forever!