Smart wool and warm feet

A New Zealand company has teamed up with Austrailan wool growers  to create a new pair of socks made out of
"smart wool" (as opposed to regular dumb wool) that has conductive fibers woven into it and that can be heated up to keep your feet warm during those bitterly cold winters. They do need a battery, so you can now add your socks to long list of things you'll need to remember to recharge every day.