Heat snorkel

Although it doesn't look very high tech, this "snorkel" can save money on cooling in a data center. Developed by IBM researchers, it's designed to be placed at the bottom of a server rack to direct cool air coming from the floor. Aiming the air could reduce cooling costs, particularly on racks that are not full of servers and only need cooling on one spot. Similarly, IBM puts "blanket plates" over portions of the racks that don't have servers in them. The snorkels have a magnetic backing.