I use ladders. I have an old one that was my grandfather's that's 10 ft tall and has a few quilts folded on each rung. I also have a bunk-bed ladder that I found in my neighbor's trash. It's on the landing at the bottom of the stairs and holds small quilts. I also have them on the backs of couch and love seat, on window seat, and hanging on walls. Hmm--didn't realize I have so many until you asked and I looked around LOL!!
Just a warning: if you use wooden dowels or ladders, put a towel or acid free paper between the quilt and the wood.