As shown in the example of FIG. 5, cover 38 may have a foldable portion such as portion 38F that can be folded into a shape that supports device 10B at a non-zero angle with respect to device 10A. FIG. 6 shows how cover 38 may be folded 180° to allow the front faces of devices 10A and 10B to face each other. If desired, covers 38 of FIGS. 5 and 6 may be provided with hinge structures such as hinge structures 40. Configurations for cover 38 that support three or more devices 10, that allow devices 10A and 10B to be placed into front-to-back and back-to-back configurations, and/or that allow devices 10A and 10B to be supported in other orientations relative to each other may also be used. In some arrangements, device 10A may be coupled to cover 38 while magnetic components are used in oriented device 10B relative to device 10A or magnetic components and cover 38 may be used together in other configurations. For example, cover 38 may form a base to which device 10A may be attached while magnetic components are used in coupling device 10B to device 10A at a desired angle (e.g., a non-zero angle).