studio reorganizing

I'm working on taming the chaos in my studio/office/eBay room. I'm setting it up for hopefully better work flow.

Does anybody have any tips for organizing paper collection, like collage papers, little collections of pretty scraps and bits of paper? I have lots of little bits, including one of these sets of loveliness.I am organizationally challenged, and I really have no idea, because they are all different sizes. A flat box? File folders? What do you do?

I've already set up a shipping center and organized my receipts with the Small Object's awesome downloadable free envelopes!