20” by 30” white foam core boards make excellent photography
reflectors. They are available at stationary stores for three or four dollars
each. There are any number of commercially available units to hold these foam core
boards. But a quick DIY holder can be made from an old clip board and a spigot.
I drilled a ¼” hole about 3” up and center of the clip
board. I mounted a spigot to the clip board with a ¼ - 20 bolt.
Mount the clip board in an umbrella bracket.
The clip board will hold the foam core board in a vertical
or horizontal position.