UPDATE on Swaddling: Since wrapping the towel around my Girl's neck helped, I went to Goodwill & bought a child's sport shirt. It was an Old Navy, spandex knit shirt. WORKS like a charm! My Girl calms down so much now. Still doesn't like storms but, is so much calmer. Cost was $3. Much better than $40 for Thunder Shirt & less complicated to put on & take off.
Swaddling for thunderstorm anxiety: I recently saw an article about a special coat to put on your dog when they are experiencing anxiety due to a thunderstorm. I think it was called ___. I also saw a video on you tube that was pretty impressive with a shivering, trembling dog calming down completely when wearing the coat.
I tried it on my dog with a home-made version of it, the original costs about $40. I made my own little thing to wrap around my dogs torso and it fastens tightly with velcro. It really did work to calm her down, but not completely. I need to figure out how to wrap it across her front also, like the ____ coat does. Still, I was impressed with the effect I got. The key is to wrap them up real tight, you could probably even just put a tight t-shirt on them.