On a different note for computers in the winter.

I’m from a warm country and winters are, well, cool-fine weather. However, when I had been to countries for work during winter, the worst thing were my hands and the degradation in my typing/mousing agility.

One of the best buy I discovered long back are those Deskmat Keyboard Hand Warmer. Rest your hand when not typing, feel the warmth and remain keyboard agile.