This may seem silly, but I am so thankful for our flannel sheets. Nothing fancy or expensive, but warm and cozy flannels. I would have never thought of these when we lived in Florida, but if you live in colder climates, you understand the chill one gets when retiring at night between cold cotton. Even those luxurious 1,000 thread count Egyptian cotton sheets are like sheets of ice on a cold night and it takes several minutes to warm up and you are awake again.
So my simple and very devout thanks for flannel sheets!