Glass is one of my go-to choices for displays and containers in my studio. First of all, clear glass keeps the color of the objects inside or behind remain visible. It's gorgeous. Secondly, glass helps combine elements of Minimalism with my love for collecting things, or accumulation. Glass is great for adding a sense of airy simplicity to groupings of heavier objects (such as books & art supplies). I've found that Hobby Lobby has the best selection of interesting glass containers if you want to try it out.