I have a small shop and wall space is at a premium, so I don't want a sheet good storage solution that takes up the valuable space. A while ago, I started thinking about a design that would allow me to hang the material from the ceiling while still providing me the ease of access that a vertical storage cart would give me. I came up with a design that pivots down from the ceiling and allows you to riffle through the sheets and pull out what you need. It then pivots back up and lives against the ceiling out of the way. Check out the design and construction in this thread.