Keeping Kids' Rooms Warm

Back bedrooms in a lot of cabins can be cold. I know mine are and I thought it'd be nice to share a few ideas of ways to keep kids rooms warm.

Heat Blanket: You can put a heat blanket under the sheet of the bed and have it on a constant low setting throughout the night. Turn it on about an hour before bed and it will warm up the blankets so your kiddie doesn't have to climb into cold sheets.
Leave a Light On: Lights, no matter their size or type, give off a little bit of heat. Leave one on if you can afford it. Or, if your kid goes to school (and isn't too young) leave a candle lit in their room. Even a small candle can put off some major heat. In the winter I light a few candles in 'drafty cold' parts of my home and it helps counter-act the winter coolness.
Leave the Door Open: If your teen isn't throwing a hissy fit, leave the door open. It will help promote an even air flow throughout the house, so one room isn't colder than another. Basically it ensures that that room will be almost as warm as the remainer of the home.
Pack On the Blankets: Layers helps! Don't just leave your child with one blanket on their bed, give them two or three. Fleece ones make a great 'under cover' that really helps insulate heat. And because their so soft kids love snuggling up with them at night.
Add A Rug: If you have hardwood or lanolium floors, try putting down a rug. It doesn't have to be a nice carpet one. A cheap one will do. Rugs help insulate the floors and keep cold hair from coming from the basement or under the house. It also helps keep those little feet a little warmer when they jump off the bed in the morning. Plus it's a comfy place for them to play on the floor.