I made the post about the old US Navy darkroom under "Darkroom Equipment".
The Navy training film, "Printing the Positive" (Youtube) shows an over-the-sink drying rack that hangs over a dark room sink. We replicated one. By welding/soldering Two oven racks together in a rectangle about 2' x 3'. We strung 5 or 6 copper wires across it hooked over the perimeter wire & soldered. These wires ran THROUGH the holes in several clothes pin springs. Two brackets at the back attached to the wall and two U-bolts attached the wire frame to the brackets. A cord holds the front up.
Should be GREAT for a small darkroom to hang prints or film over the sink.