Due to a request from someone I consider to be a ninja master at taking pictures of GI Joes, I have put together a How-To. The first two pics should be an expanded view of the entire set. It shows the foamboard walls and floors. I got mine from Walmart for around 4 bucks apiece. They are held together with masking tape. The other shot shows a kitbashed computer console. It is made from a playset I got at a thrift store for 3 dollars. The console is a flat piece of plastic with radio and dashboard pieces from 1:18 scale cars. Don't ask what I do with the cars. The map is from an atlas I got from a thrift store for 52 cents.
the ducting/wall piece is the roof from an HO scale train set building. I happen to have a lot of old train set stuff. I did model training for a long time, but it is very expensive, time consuming, bulky, and very expensive. The "computer base" is a piece of a toy firetruck I got from a thrift store. I dremeled it apart into component pieces. One will be shown later. It got spray painted silver to simulate chrome or metal. The computer piece from the new DVD pack does not sit flat, that can be fixed easily enough with some tape or paper wedges.
This is a control panel from the aforementioned firetruck. It has gauges, dials and other widgets with a coating of some black paint to highlight the details. When turned to the side, you can see that it is hollow and was hacked out of something else.
This is another train piece. When on its side, it looks like a metal bin or corrugated wall something or other. It is actually a small outbuilding. HO scale train stuff is pretty cool. Did I mention it is very expensive?
The big silver wall is the top of an old cable box. It is the easiest set piece ever. I unscrewed it from the bottom of the old cable box. The fan is an old fan from my old computer that stopped working. It has a yellow wire running to that silver think. I'm not sure what that is, but it looks like a heater or cooling vent, or maybe a technical gizmo. The trick is to find small thinks that look like something else.
This is at the other end of the cable box top. (note: if you are from the cable company, I sent this box back to you, so don't charge me for it.) It is a wall part from another train building, a trainyard tool shed, tape, and wire. The molded tools are a nice touch to the train set, but are terribly small for Gi Joe. When shot from the right angle, it looks like a heavy metal doorway. I added a small phone/GPS thinkie to it to look like a control panel to operate the door.