Abstract: A foldable cover includes a hinge suitable for detachable attachment to a host unit and a flap portion. The flap portion is pivotally connected to the hinge and includes a plurality of segments which are substantially the same size and substantially rigid, with a foldable region between each of them. The flap portion is capable of being folded into a rectangular structure in which each segment of the flap portion is folded substantially flush one atop the other. The size and positioning of the resultant rectangular structure is such that the back face of the host unit can be further augmented to improve its utility or ergonomics, for example by the addition of a handle.