as usual, you will need mug, plate or bowl, cutlery as a minimum
for an overnighter in winter you don't really need a fridge or esky unless you really must cook up a meat breakfast or dinner (as a potential option without a fridge you could take frozen meat and let it thaw, however, washed eggs should not be left un-refrigerated for more than 2 hours as there is a risk of Salmonella, likewise soft cheeses should not be left un-refrigerated for more than 2-4 hours, however, hard cheeses will last much longer)
if you really need milk, take long life milk or powdered milk
for breakfast:
you can supplement it with cakes such as an apple slice or vanilla slice although nuts are far more healthy - these don't need refrigerating
instant coffee sachets work well in this situations - just need to boil up some water
for dinners, packaged soups work well to warm you up at night
a hiking gas stove is probably all you need for 1-2 people
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if you take a cast iron dutch oven then you can use this with camp fire to roast veges, etc