Overhead camera boom made with PVC pipe, from Dino at Hack a Week:
"The parts for the boom cost about $35 and took about an hour to assemble. I might make a change to the overhead mount and see if I can use a double roller channel from a pocket door. This will facilitate easier movement of the boom without having to deal with rotation caused by the weight of the boom."
Have an iPhone? Check out all 200+ new features coming in iOS 13.