Thanks for all of the great suggestions! You all are so creative.
Sorry for the lack of responses; we've been busy with fires. At the moment, the fire came within a mile or so, having burned close to six hundred square miles in a couple of days. We had to evacuate for a week, and were happy to do so. A mile from a wildfire is just way too close for comfort. A number of friends have had their ranches burn to the ground, several of whom were well prepared for wildfires, but these fires got going very quickly, moved rapidly and were exceptionally hot.
Stay safe! And thanks again for all the ideas.
All the best,
Peter