Hanging Enclosure Concept Piggybacks a Hard Drive on Your Laptop Lid As tiny 1.8" hard drives continue to get larger in capacity and smaller in size , this design concept for hanging one from the back of your laptop display seems like the way to go—it's using a 2.5" drive, but a 1.8" would really be better. I've got a 3G card that hangs like this already, but piggybacking an external drive would be far more useful—especially when you have to pick up and go in a hurry. [Yanko Design via BBG ]