Udijw writes – “This reflector panel holder made of 3/4″ PVC pipe is handy if you have a spare tripod to use. The tripod provides a stable base that can be adjust for height and tilt angle. Reflector is the collapseable type used for an auto windshield (31 x 38″). It may also be possible to build a stand from PVC.” – Link.
Cheap DIY homemade reflector stand