Everett, I think the confusion over the Morse Code Key is due terminology. Amateur radio operators refer to a "key" as the piece of equipment used to generate the tones (dah-dit) heard on the radio. The thing that the telegraph operator tapped furiously in the old movies, that is a key. I understand that you want to include a list of the Morse code characters, correct?
You are right, it won't take any room in your kit, and if it helps your confidence in an emergency situation, priceless!
JoeBob