One of the first observations you might make is that saying thanks to someone in writing is usually referred to as sending a thank you note, not a thank you letter. A note of thanks should focus specifically on the gift they gave you and not become a lengthy letter relating personal events.
A thank you note should begin with an opening that addresses the person by name. The first few sentences should include some comments that relate specifically to the gift they gave you. You want to mention things like the color of the gift or some identifying factor so that your note doesn't appear to be a generic version of a thank you that was sent to everyone who gave you a gift.
Next, you should tell the person how you plan to use or display the gift. Before ending the note, mention how pleased you were to see them at the party, cookout, family gathering, or whatever the location was when they gave the gift to you. Depending on your relationship with the person, you could also mention something about hoping things are well with them or that you hope to see them soon. The note should be signed in a manner that is appropriate for the relationship you have with the person you are sending it to.
By VeronicaHB from Asheboro, NC
Our grandson Mason just had a birthday and we sent him a card with money inside and this is what we got back from him. Needless to say, we loved it and thought it was a cute idea to send as a Thank-you Card.