First note is, use VERY LITTLE. Only a small pinch. A little goes a long way.
I purchased dried lavender flowers at World Market. They are in the spice section, not the tea section. A small package was $1.99, and yet it will go a long way. I put a small pinch in hot water with a touch of sugar, or chamomile. It is very fragrant, relaxing, and clean tasting. It is said to be calming like chamomile. Since it takes so little, I just drop the flowers in to the water, they float on top, and I consume them as well.
Keep in mind you can add this to any tea. It really enhances the experience.