And, I've seen many a present given to small children who end up playing with the box rather than the present. Same thing with an accompanying card for small children. Why not spend that few bucks on something else than a card they don't care about? Of course, since the dollar store opened up...
Hehehe... I had a snotty relative who would only give Hallmark cards and openly insisted on receiving only Hallmark cards. So, one birthday, I put a letter size sheet of paper in a same size envelope. I had written on the sheet of paper, "Couldn't find an appropriate Hallmark card. Happy 40th Birthday." I included ten other sheets... 41st, 42nd, 43rd.... she got the message.