Wimberley Plamp PP100
Description (from B&H): A popular accessory for macro shooting, the Wimberly PP100 Plamp is an easily positionable arm used to hold macro subjects and other useful objects. One end clamps to your tripod, while the clip grasps the object.
The Plamp holds a reflector or gobo in just the right spot to get that burst of light or shadow that changes a shot from okay to extraordinary. Get that annoying branch out of the shot without disturbing anything else. Position the gooseneck arm and a grey card to shade your lens or take a light reading. Or, hold a flower steady so that the shutter speed can be slow enough to get the aperture you’ll need for extreme depth of field at macro distances.