You can use long fabric scarves. Mine are draped in all sorts of ways and puddle up on the floor. I use them mostly in the hallways where there isn't really room for a heavier drape. They come up one side of the window banks, loop over and over the top of the rod and then fall down the other side.
Any fabric store should have great choices.
I like the scarf idea! Maybe I could find ones the cats wouldn't mutilate. Have to do that while Iceman is away again so he can't protest.