Summary

Update: 2019-05-22 addet alternative case with GoPro-mounting and GoPro-stand.

This thing was made with Tinkercad. Edit it online https://www.tinkercad.com/things/jhdhUgZTBT8
You need this Standard – Camera Module for Raspberry Pi Zero:
https://shop.pimoroni.com/products/raspberry-pi-zero-camera-module?variant=37751082058
Raspberry Pi zero:
https://shop.pimoroni.com/products/raspberry-pi-zero-w
and a 2.9x5mm screw for monting the ball.
You can print it with 0.1-0.2mm layer in PLA, ABS, PETG,...... without support.
I use this fantastic software:
https://github.com/ccrisan/motioneyeos