Star Trek tech No. 5: Replicators
In the Star Trek universe, anyone hankering for a shot of Silurian brandy or a cup of Earl Grey (hot) need only locate the nearest replicator and order it to whip one up. Today’s early replicators are called 3D printers, and they're available at office supply stores. Download code to the printer, then watch as it lays down successive layers of whatever you desire (provided you desire something made from solid chunks of polymer). Printers that can combine different materials and even lay down printed circuits are on the way. Today, plastic molds; tomorrow, a wriggling bowl of gagh.