Thanks for the responses! Living in a winter climate, I'm always looking for creative ways to beat Jack Frost and dodge high energy bills.

Sleeping warm is never a problem. Lots of warm comforters, fleece blankets, and arctic sleeping bags if needed.

I am more interested in certain waking situations -- creating a low-energy-consumption micro-climate where I can read or type without distraction (or gloves). My three-season sunroom comes to mind -- beautiful winter views on a sunny day, but not warm enough to sit and enjoy. In my little writer's cabin too, an electric blanket would give quick heat while the old wood stove slowly gets up to speed. And, it's a lot more economical than firing up an electric space heater.

I think it's worth a try. Time to keep a close eye on Boxing Week sales.