Herbs in frozen olive oil is one of my favorite ways to harvest. The herbs don't get dry, brown and brittle in the same way they do when they're frozen in water. They also retain their scent and flavor much more effectively!
Hang this swag in the kitchen, then snip off sprigs of preserved lavender, Santa Cruz oregano, sage, rosemary to add to favorite recipes. (looks easier to make than a wreath and I'm growing these things now)