Looking at the photos of the air quality balloons, I thought of how they resembled sky lanterns, the small hot air balloons popular in parts of Asia. (The “trick” is fire proofing the paper.) I would like to make one of these, but living in California, I’m afraid they’d turn into fire balloons. Yes, a nonflammable equivalent could be made with Helium and some LEDs, but it doesn’t seem the same. The simple elegance of a bag and a flame is part of the attraction of the lanterns to me.