Anyway... I finally found a new home for them in our living room/foyer entrance. We have been thinking about purchasing that unit from Ikea with all of the cubbies, but I kind of like this simple, resourceful approach a bit more. It's less expensive, versatile, and unique(--well not to any of us that lived the broke college student lifestyle).
This is what they are doing for now...but of course that is subject to change.
I like the size right now so, not sure I will need more crates. (Maybe just a couple) I've seen book shelf crates gone terribly wrong before, and I don't want that to happen here. =)