Official Raspberry Pi Zero Case
Case fits perfectly (as you would hope from the official case!). Although there are 3 front cases (inc one with a GPIO cutout), the back case have a GPIO cutout (whether you want it or not). So if you want the board fully enclosed you may need to use an alternate case. Also, you need to remove the Zero from the case to get access to the SD card. This could be good (protection) or bad (eg for development) depending on the application!
Michael Finlayson