FIGS. 7, 8, 9, and 10 show illustrative configurations in which devices 10A and 10B are oriented relative to each other using magnetic components (see, e.g., components 38 along the peripheral edges of devices 10A and 10B in FIG. 3). When the edges of the housings of devices 10A and 10B are brought together with this type of arrangement, magnetic attraction between magnetic components in respective portions of devices 10A and 10B hold devices 10A and 10B together. Device housings 12A and 12B may have curved sidewalls, flat (vertical) sidewalls, or sidewalls with other suitable cross-sectional profiles.