A good sized bunch of fresh eucalyptus.
 
Hang upside down in shower for aromatherapy-make sure will hit water where you hang.
Hang upside down to dry for arrangements.
Put in a mix of 1/2 glycerin, 1/2 water, let soak up completely and then let be dry for a few days(make sure some air-flow between leaves at this time) for a bit more softer dewier dry feel.