I keep my fabric for long periods so I store it in cardboard boxes. Most of the time I can't afford the archival quality boxes so I buy the regular office file storage boxes (buy the heavy duty ones! the light ones don't hold up) and line them with archival tissue paper. I write on the outside of the box the theme/color. The boxes stack well up to 4 boxes high. I do have a couple of large clear tubs that I put my completed tops in, they are out of the direct light with a desk between them and the window.
For my works in progress I have a number of men's dress shirts in the sewing room -- I just lay them over the project/open box. I'll admit, it looks messy but it works for me. Lots of yardage in there, they spread well and fold up well too.