A letter of appreciation for donation is a powerful tool that goes beyond a simple thank you—it builds lasting relationships and fosters continued support. Go to Product Support and fill out the information for your event.Personalize the message. Target local businesses that have the products you need. Many will ask for an official donation letter with LAUSD's Tax ID number on your school letterhead. Write an excellent thank you letter for donations. Get tips and best practices, plus three inspiring samples and ready to use templates! Packages and letters can be shipped to our facility location in LA. To get started, please complete our online Product Donation Form. 13 Top Secrets of Donor Thank You Letters. Secret tip one: Consider adding a personalized handwritten note in the right-hand top margin.