This is a case for the "unofficial" Chinese Raspberry Pi camera that can be bought on eBay. The Chinese camera uses the exact same sensor as the official Raspberry camera, but the PCB board is somewhat larger than the original one, so a different case is needed.
This camera is not a simple knockoff, but rather a more advanced alternative since it offers lens interchangeability rather than a single fixed lens.
There are other case designs available, but I wanted one that was as small as possible, looked good and had several mounting options. The result can be seen in the pictures.
Several mounting options are available with two different attachment mounts and several stands. I also have another variant available here:
The only difference is the look of the camera case. The parts are interchangeable.