Cornflower petals also make a wonderful mystical blue-colored handmade ink - which certainly has more magickal properties than store-bought for use in hand-worked spell books, etc. To make an ink out of the flowers, pick enough to fill a coffee cup, packed moderately. Using a non-metal container, boil 2 cups of water and drop the flowers in. Boil until the water becomes a beautiful blue and has evaporated down to about enough to fill a small jar, such as a baby food jar - do pick a jar that comes with a tight-fitting lid, of course. Using a strainer, strain the liquid into the jar. Add 2-3 drops of vinegar to hold the color, and a pinch of salt to prevent mold over extended periods. Shake lightly and keep in a dark area. Use an old-fashioned quill pen or calligraphy pen at any point thereafter for making your entries.