This is a Sony RX100 Mark III grip with space for the Arduino Nano and a battery and some extra electronics. Fits like a charm.
If possible, clear the support in the cable tunnel before it closes. I did this by pausing the machine and carefully removing the supports. If you have a better program then XYZWare, you can skip the support in the cable tunnel.
Used a flatbed scanner for the shape of the camera and 123DDesign for the creation of the model.