How-To: Cozy Bed Warmer

Here’s a great holiday gift idea by Calli of Make it Do — sew up a cozy bed warmer.
Calli writes:

A cozy bed warmer is one of my favorite things. Put them in the microwave for a few minutes and they work wonders for cold feet, aches and pains, or plain old stress relief. Bed warmers make a such a wonderful gift. They are easy to make, inexpensive, and both pampering and useful.