To this day, I always have a collapsible entrenching tool in the trunk during winter season.<<<<<
Good point, we learned to carry exactly that (didn't know the real name for it, we called it a folding shovel) when 4-wheeling some years ago. We were always digging out people who had gotten stuck with no way out except our shovel and winch. Now that you've mentioned it, I wouldn't mind carrying it again, you never know.