Are your C3 ettins feeling just a bit homesick? Maybe longing for a bit of the past, when their ancestors were hard at work building their civilization? Well, now C2 ettin architecture is can be anywhere you want it!
The straw shack and the the box railing are simple agents with no special actions, but with the wood railing decoration you can use special action 1 to cycle between three styles of railing as seen in the second image.
Best combined with for creating walkable platforms!