No, this isn't the one I was thinking of, although it's very nifty and I'll bookmark it for further study, Diane. Thanks!
This poster had pics of her bins and envelopes right on the post. All I remember is that the bins were clear containers from the Container Store, and I found those, but I think there were envelopes involved, and they weren't the Tim Holtz ones. I think they were bigger. And she had used a narrower clear container for her Nesties sets.