You can get anti-static pinkish ziplok bags from sources like U-line. But static is more an issue in Desert winter or windy March. Film holders and especially plastic darkslides should be treated in advance with anti-static spray. It lasts for years if done right. Metal cameras in static-prone conditions can be grounded if necessary. I'd just bring along a length of speaker wire with a small metal alligator clip on one end and an iron nail at the other end.
I always keep holder in individual thin poly wastebasket liners if 8x10, or in a tight poly box if 4x5. Despite all the terrible weather I've been in over the past decades, I can recall only one instance when condensation formed on the film itself. But mainly camping outdoors, the backpack, film, and camera gear is constantly acclimated to the ambient temperature anyway. Hauling it out of a heated cabin, motel, or RV, and suddenly needing to shoot it, is likely to be a different story.
Logistically, if you value the skin on your fingers, or even the fiber of woolen gloves, etc, you'll avoid metal tripods in extreme cold. CF or hardwood make a lot more sense. But when snow is present, there is simply no substitute for sheer bully mass, like a big wooden Ries, fitted with snow baskets on the feet if necessary in powder snow conditions. I really preferred snowshoes over skis to stomp down or compact snow into a suitable shooting platform, as well as to maneuver close up to rocks and so forth.
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