I do several 2-5 day winter trips every season, so I compiled a list of my full gear shake-out. If anyone has any questions, let me know!
If I were to do a longer trip or if I'm expecting heavy snowfall, I would swap the hammock for a good 1P tent. Also, I can cut the heavy L.L. Bean ski jacket for a fleece coat, but if I'm car camping or doing a short hike, I'll carry it for comfort.
Winter Packing List