To accent the circle recess cuts, paint the plywood black. Remove any paint on the surface with the proper cleaner. The result is black circles around the shaker pegs to match the black line on the face edge of the coat hanger.
Screw the coat hanger into position through the partially drilled 1/2" holes for the shaker pegs. Insert the shaker pegs and you have a permanent home for a shop coat or smock!