Lisadh writes on the Happy Snowman page on Squidoo, "If you're looking for a way to make your Christmas cards or letters a little jollier or to make your kids Santa letters more convincing, Santa postage stamps might be what you're looking for. These days, you can find thousands of great, original designs on genuine US postage. From funny Santa cartoons to vintage art, holiday postage stamps are available in designs to please virtually everyone."
She goes on to present sampling of some of the Zazzle.com labels available online.
[Editor's Note: Just think how more effective this great idea would be by using with any number of postage stamps depicting Santa issued by the United States or even other countries (think Christmas Island). These are readily available at many stamp shows and are sold on-line at eBay or by individual dealers.]