Door knob coat rack; this would be fun to make
Old bed post with old door knobs makes a nice coat hanger near the door especially if no closet is available in that area. To attach the door knob you can glue with a heavy duty glue or purchase wood dowels that fit center of knob flush and measure and mark where you want the door knobs and use screws long enough to go thru headboard and into the dowel inside the knob. If you can find a good glue that is easiest way to go. To hang put two screws
Door, painted and filled with photos, turned into a coat hanger. Perfect house decoration.
This Old Door Photo Frame and Coat Hanger is Just Ideal for a Hallway