Well, I've gone ahead and purchased the large Lexan drybox that will house the running saucer. Combined with the other similar enclosure I bought ages ago I will soon have three. Rather than let the smaller one go to waste, I'm going to skip straight ahead to a three-enclosure habitat!As you can see the weighted base will leave room for two additional enclosures to be added at a future date. But even with three enclosures, I believe it will be more than large enough to accommodate a second hamster, whom I have decided to name "Hamdrew Ryan".
The final five-enclosure 'city' will house four hamsters total. The additional two will be named "Ratlas" and "Nomtaine" unless someone suggests names I like better.