What are your favourite mocktails?

While I love making and drinking cocktails, sometimes it's a good idea to take it slow on the booze, and to provide something for people who aren't slowing down so much as not drinking at all. I don't want slowing down to consist solely of water or soda, or for serving non-drinkers to consist solely of pointing at the tap or soda bottle, so it's always a good idea to have non-alcoholic cocktails in my repertoire.What are your favourite mocktails to make, and to drink? I'm particularly interested in mocktails that aren't just non-alcoholic versions of regular cocktails.