To teach kids about writing thank you notes from an early age, take a picture of them with a joyous expression of the Christmas or b-day gift they receive when they are one and include that in the thank you note you send the giver. As they grow older let them scribble or draw a picture telling the little child this is their thank you note for the toy grandmother gave them or Aunt Sue gave them. Once they begin writing their letters help them write thank you and send that to the give of the gifts. When they are in school,they can write their thak you notes. Naturally they will know tosay thank you ,butthe notes makea nice touch There is a lost art in writing thank you notes these days.