Book excerpt: Aromatic plants that open up a whole new world of crafts and real medical benefits -- in the form of clearer heads, elevated moods, and strengthened immune systems -- are the focus of this herbal handbook. The easy-to-follow instructions explain how to add essential oils extracted from herbs and flowers to water in vaporisers, melted wax for candles, and oils for bathing and massage. Herbal recipes include a bath of lavender, bergamot, and cedar for winding down after a hard day at work; the scents of geranium to ease nervousness; and eucalyptus, hyssop, lavender, or lemongrass for cold and cough relief.