Quick-release belt-grip kind of like a simplified version of the B-Grip.
Very useful to have the camera ready without occupying your hands and
without having the camera shake around and potentially hit things and
get damaged as on a belt.
This makes use of the camera_plate from my 3d printed shoulder rig -design.
Blog post:
marcuswolschon.blogspot.com/2011/07/3d-printed-camera-belt-clip.html