I sent each of my DGKs a valentine. The eight year old went for the mail. Brought it in and there wasn't one for her. She called in tears. "Grandma did you forget something???" "WHA???" "Grandma, everybody but me got a Valentine." I assured her I sent one. She went out and retraced her steps - she had dropped it on her way in the house. She called back and was very happy she found it.