For donated goods, provide a description and number of items, â–ª date provided, and â–ª the total fair market value of the items; Use this form whenever you need to provide a formal acknowledgment of an in-kind contribution.Next, include the date and accurate details of the donor and recipient. 3. Donation Letter Template: Events. Try our free donation request letter templates! Download our standard template or check out our example letters for events, auctions, schools, and more. Record item donations for your charity or nonprofit. Easy-to-customize online form. The letter serves as a thank you and required written acknowledgment, and should include specific language from the downloadable template for tax purposes. Learn how to write effective fundraising letters that inspire more support from donors.