I'm playing the Kampfgruppe Von Luck campaign for Chain of Command and in one of the games the 150mm howitzer on a Lorraine Schlepper caused a building to collapse. The Germans lost that game and had to try and take the table a second time and so I needed to replace the building with ruins. I have a few models of rubbled buildings but none that would fit the footprint of this particular model and terrain was such it needed to fit perfectly.
The best solution was a quick scratch build of a building with an identical footprint. It was worth the effort, after all you can never have enough ruins (or trees, it seems). Turns out the Germans needed another two attempts to capture the table and so the ruins saw use in two consecutive games. Even better I was able to work the same model into another game I was playing in a different campaign.
The building was made from foam core based on a piece of MDF. Coffee stirrers were used for the floor boards and the rubble was off cuts of foam core covered in filler, cat litter, pieces of cork and broken coffee stirrers. As you can see I made a separate piece of rubble that can be detached if need be.
I painted it using the same colour palette as the building it replaced in the game.
Here it in use in the second game in the Kampfgruppe Von Luck campaign:
Here it is in a different setting the following week:
paints 
