Thanks BeatleGirl!! I Loved this! And thanks for the link! :-)
A quote I found:
"The guitar pick was Paul´s tribute to his own personal recollection, namely that of their not being able to find a single guitar pick, once a decision was made that they could all jam a little. Everyone looked in their pockets and even inside their wallets for a guitar pick but, when none was found, that´s when Elvis led Paul to the kitchen where the two proceeded to make a few out of plain cardboard plastic. And then, they jammed!!"
A couple of Links about the time they met: