So we are settled in now, and starting from scratch back in Canada let us do a few things we otherwise wouldn't. As soon as I got the apartment I went out and bought I-beam curtain rods and installed them across the living room walls. Now we hang art suspended from rollers on the rods by monofilament lines. We have a giant "mobile" in the center of the room, a series of thin driftwood pieces with a paper lamp on one end and a counterweight at the other. It spins around freely, particularly when I hit my head on it.