When I was a kid, I heard of warming a brick and wrapping it in a towel or blanket to warm the foot of the bed. I never did that myself, but I had a baby blanket and I'd hold it in front of the heater in the living room to warm it real good, then run in the bedroom, jump in that cold bed, and wrap that little blanket around my feet. Our kids and grandkids would have no idea what it is to sleep in a house without central heat on all night, but I was more than 20 years old before I ever slept in a house that had any heat on at all at night. In fact, we kept the doors closed and didn't even heat the bedrooms in the daytime.