One day, while the four of us were out there, Chris and I had called in at one of the hardware stores in the area. Stacked high just inside the doorway was tongued and grooved timber on special offer. Chris and I looked at it and the idea came to both of us simultaneously. A timber ceiling in the hall would look so much better than the polystyrene tiles I had used to hold up the straw and cow dung. We wasted no time in obtaining the approval of both Mrs S and Mrs Chris before measuring the ceiling and racing back to buy the timber. There was plenty of room to store it and it was hardly going to go off.
It's one thing having the idea: planning how to execute the idea is a completely different matter, as Chris and I were to find out.