The Miasmic Malignafier - I decided right away that this should be a lighted model.  I used a 20-light string of LEDs (Fairy Lights) and it was pretty easy.  I cut all the parts so that each chamber connected to the next.  I started with the light on the end and pulled it up through the bottom and glued it into the top of the tallest chimney.  Then, I pulled the next light to the next chimney, and so on.  That left a nice wad of lights for the main furnace.  I had to make room for the battery pack in between the lights in the main chamber.  I had wanted to do some kind of smoke effect for this but decided to settle for lights.  Maybe on the next one!

The Pox Furnace wound up being a bigger job than I intended.  I saw where Unixcubeminiatures had done a water effect by raising it up off the table.  I thought that would be a great idea AND I could light the pool!