While setting up my Senior Thesis Exhibition three and a half years ago, I stumbled upon an interior design idea that I've used ever since. If you replace a standard lightbulb in an incandescent fixture with a Bug Lite bulb, the space illuminated instantly becomes the coziest, warmest, most inviting part of your home. You'll want to smoke some opium, make some coffee, watch Twin Peaks and then make out until you fall asleep. Perfect for frozen days like these.
A slight twist I tried a year or two later: Soft Pink bulbs. They do everything they say they will, calming a room with minimal visual change.