Like many, many of you, I struggle (and generally fail) at keeping a clean organized workbench.  As I have started and worked through projects over the years, I've tried just about everything to keep my projects organized - butter tubs, old greeting card boxes, even discarded instrument packages from scientific instruments!  See, I like to keep all the detail parts, replacement couplers, etc together in a single place while I work on a model, so I can just pick it up, work on it, and then set it down without spending time trying to hunt everything out of my on bench storage (ask me why I own 6 Xacto knives some time).  And did I mention I tend to not want to spend a ton of money on stuff either (I have 4 kids to eventually put through college)

While on a recent visit to Target to stock up on non-grocery family needs, I ran across these:

Sold for a single, American Dollar Bill in the Dollar Bins when you first go into Target (behind the shopping car corral) I think they are marketing these as lunch carriers for Back to School.  The come with three compartments and the grey lid all shrink wrapped together.

But pull apart the segments, and you get perfect storage for N Scale locomotive and rolling stock projects

SO, by thinking outside the box (!) you can get 3 storage bins, in a nice, stackable package, for a mere dollar.  What's more, I think if you did it right you could pack a stack per project with many of the tools you'd need to finish the work, and take it on vacation.  Just don't try getting those Xacto knives through TSA!