I had these lace curtains from IKEA (Alvine Spets) which we used in our previous home for privacy. I no longer need them for that purpose here but thought they would make a great screen that looks really pretty too.
I made a ruffled tunnel on the top and bottom and fed a tension cord through them. Jos placed the hooks for the tension cord on each side of the door opening also at the top and bottom. The lace panel stretches over open door keeping visitors out. If we want to go in and out, I can simply unhook the bottom cord and slip it into the same hooks as the top cord to allow us to walk in and out. I am really happy with this solution which is not only functional but prettier than a screen.