The fledgling science of ergonomics has undergone a small revolution over the past decade, which has radically changed the way safety-conscious manufacturers design peripherals and accessories. Novel designs have all but replaced earlier ones that sometimes contributed to repetitive-stress injuries instead of reducing them. The latest principles of ergonomic design are now applied to everything from monitor stands to document holders, footrests, and luggage. Even the lowly keyboard continues to be reinvented in a mind-boggling array of shapes. In this story, we take a look at some of the most comfort-enhancing peripherals and accessories we've found.