Well, when I think of making Christopher, I often do visualize a boss battle diorama/play set--I don't think I'd go with the underground dragon boss though. I'd say that would be a relatively easy project, as it's just a corridor and the dragon is fairy simple, anatomically, but that particular monster doesn't do much for me. As I threw away my original Angel Mummy figure (the necks failed over time, unable to support their own weight), maybe I'd do that again, except on a smaller scale. I remember one time I was seriously considering doing a Castlevania Adventure level 2 play set with collapsible bridges, giant rolling eyeballs, etc., but it was too ambitious for the amount of time I would have been willing to spend on it.