Altered vintage library cards and sleeves

Hi. I have a friend who is a librarian and he recently gave me a big box of old library cards and sleeves. He knows my obsession with all things paper. I have been thinking about what to do with them and I thought it would be cool to alter them like atcs or tags and to also alter and decorate the sleeves to match. If you want to give this a shot, put your address in the comments below and I will send you 3 cards and sleeves. You will alter them in a spectacular, vintage way and then you will send them to 3 different partners. We could also tuck little surprises and ephemera in the sleeve with the card. My mind is spinning just thinking of the possibilities!