collage buildings

We started making some small (A5) collage houses and shop fronts today ready for a WW2 street scene. We're hoping to make our display interactive and will be updating it as the war progresses ie, we will add blackout curtains and 'tape' to the windows, all metal fixtures and fittings will disappear, 'telegrams' will be delivered to certain houses, barrage balloons will appear over the nearby factories, some buildings will get bombed (replaced with a 'destroyed' collage) etc.