I modeled this inspired from some others work I had seen, in order to keep cables close to the camera and avoid less issues with catching them on humans or devices. A design you'll likely want to tweak to your own use case.

Its 90mm diameter for the 6200 camera series, and features 3 holes that are 5.5mm which fit your fairly standard thick USB cables, as well as a hole which is 6mm which I'm using for power.