I have several large, zippered floor pillow covers which I store my odd sized pieces in . When a pillow cover gets too full, it's time to start piecing them together and use them up in a project.
When I buy packaged batting, which I sometimes do when on sale, I store the batts, still in package, inside the bolster covers for the daybed that doubles as a cutting table base in my sewing room guest room.
http://www.quiltingboard.com/t-62465-1.htm
Keeps them close at hand, but not visually cluttering, and to date, no guest has ever commented about the oddly rustling plastic in the "pillows" since most people take the decorative extra pillows off a bed anyhow.
RST