there is not many things i do differently in winter apart from sticking an oil filled radiator in the back of my van to stop pumps/hoses freezing.
i also take grit and a sweeping brush for wet pathways that might freeze and an extra flask of hot water in case my jets freeze.THATS IT!!
nice and simple and cheap.no problems,no worries.
also make sure you have an emergency fund built up that you can dip into if need be just in case the weather is that bad that you cant get out at all.
regards
dazmond