@gdnrbob I’ve heard about using rice. But, for run & gun location shooting (photography), there’s too much danger of the grains getting pulverized. The tiny particles could easily find their way into the delicate camera or lens mechanisms. If the gear was in a professional camera case between shoots, I would use desiccant silica gels
When shooting in extreme cold, I used the baggie procedure before going back indoors. Besides the electronics, it’s important to keep any condensation from forming between the elements in a lens. Every once in awhile, it was necessary to get inside really quickly during a white-out snowstorm - without any time to baggie the gear. When inside, it was easy to see the condensation forming inside the barrel of the lens. The solution was to ’cook’ the lens in an oven at 100 degrees. Then, back to work.
Then, there’s another challenge of putting your hot eye up to the cold viewfinder when back outside. That would immediately cause condensation on the viewfinder glass. Impossible to see anything at all. There’s a couple of tricks to solving that. But, I don’t wish to hijack this thread much more.