No Film School has an article on kitting out a BlackMagic Design 6K Pro camera to get the most out of it. It is by no means a full look, but it has some great options to look at including cages, storage, batteries and battery handles.
Certainly worth a read.
I so want a BlackMagic 6K Pro. My Canon 60D just shoots such crappy video that my Osmo Pocket looks so much better even without things like lenses. And the fact that I have some canon lenses (though of course not the best glass) means I could have some glass to shoot with it.
And the tilting back screen and view finder really sell it for me if only I was making enough money.