Large long mittens that go half way up your arm. Gaiters to help keep your ankles warm, and a hand muff to keep your hands warm sitting on a deer stand during winter hunts come to mind. Also keep a piece to sit on, as it can help keep your butt warm, too! Put the fur side closest to your skin, to hold warm air close to it. I would remove the gaiters from my feet when walking through snow, to keep them dry. I would put a hand muff in my day pack for the same reason, along with the seat pad. The mittens can be worn.
I first saw sheepskin mittens like I have described years ago, owned by a man who rode a motorcycle to work and back each day. They were the only things that kept his hands from freezing, as gloves were just not enough. He wore woolen gloves inside the mittens, so that if he had to use his fingertips for something he could take that hand out of the mitten, sticking the mitten under his arm, do what had to be done, and get his hand back into that warm sheepskin mitten again.
Final thought: The old adage is that if your feet are cold put on a hat. Its true. So, if you don't have a good leather lined hat to wear- I have one made of rabbit- then probably the smartest first thing to make would be a good loose sized hat to wear in the cold. I prefer to wear a parka with good insulation and protection for my neck and shoulders. My body heat comes up and out the snorkle at the face of the parka, warming my nose, eyes, and cheeks as I move. I can wear tinted glasses to cut down the glare off of snow. I can wear a baclava or even a scarf across my mouth and nose to help keep them warm if need be. But you need some kind of warm hat on your head to keep your head and ears warm. I have a ragland watch cap to wear under the parka, which I can pull down over my ears if needed. And I carry a light weight baclava( ski mask) in my day pack to wear if needed for more warmth. I put it on when the wind picks up to 30 miles per hour or more, and I have to travel into the wind to get back to my car, or home.
A gaitor that goes from your ankle to about mid-calf will keep cold air from getting up your pants legs, and freezing your lower legs. Sometimes, its just cold out, without snow. With this kind of gaitor, you can wear a lighter weight boot or shoe, and still keep your ankles warm.
