Bring down a fever with onion slices. Place onion slices in your socks and put a cloth soaked in apple cider vinegar on your forehead. It won't be long before the fever subsides. This is a great alternative method to a cold water bath.
Sambucus 'Eva' / 'Black Lace' - rich purple foliage, with pale pink flat heads of flowers in May-June once plant is a few years old. Can grow big, but is best kept bushy by pruning hard back to around tall each year.