Mention the gift and your appreciation for it and how you intend to use it. I want to convey my heartfelt gratitude to all the members of the foundation who work tirelessly to make the world a better place for individuals like me.Your holiday gift was deeply appreciated. I just received your Christmas card, cookies and gifts in the mail this morning. Guidelines for writing appreciation letters: State what you appreciate and briefly explain why. For many, receiving a Christmas letter of appreciation means more than a material gift. Your thoughtfulness made the holiday extra special. Say thank you to your boss or company head for your holiday bonus in the way that best fits your role and personality. This article will provide you with sample letters to help you understand how to write an informal letter to your uncle thanking him for the birthday gift. ' Everything you do, from filling our hearts with love to filling our tummies with amazing food.