There are provided embodiments of a hand-holdable case sized and shaped to integrate a personal electronic device with other interchangeable articles or devices to conveniently allow the combination to be hand-held as one. In one exemplary embodiment the case provides resistance to wear and tear as well as drop protection for a portable electronic device and an interchangeable article or device. In another exemplary embodiment, the case includes a back plate that reversibly attaches to the personal electronic device case and secures an article or device such that the personal electronic device and article or device are easily carried as one, yet the article or device can be easily and reversibly detached and reattached to the personal electronic device case without unsheathing the personal electronic device.