I keep mine in similar plastic boxes too (Flambeau Zerust Tuff Tainers; I think the model number is 5004). I’ve bought all the A&A games over the years, including some in multiple copies, so plastic boxes are the only way to keep that many plastic sculpts organized into all the categories I want (including colour and model variations). The U.S. (the only country to show up in every A&A game) is spread out over four containers; Britain, Russia, Germany and Japan each use three containers; the other countries use one each. The American pieces used to occupy just three trays, but with the arrival of Global I redistributed them over four trays to allow more room for future growth.