One thing I'd add to the list is a slow cooker. I don't use it very much in summer, but in winter it can be great (the winters here are fairly bleak. Actually, so are the summers - but let's not go there...).
Keep an eye on your local supermarket for special offers on cuts of meat - shove it in the slow cooker in the morning with some tomato/herbs/spices and when you get back in the evening it's done (and your kitchen has that lovely warm home-cooked smell that takes the winter chill off!). You can easily cook enough for several days in one go too.