As someone who grew up with library sign-out cards, it made me shudder to find them in piles beside computer terminals, to be used as scrap paper –– they seemed too much like artifacts for something like that. They had too much history, too much character. So I started collecting them, almost absent-mindedly, with no real idea of what I would do with them.
But then thank god for transparent ink. So now I’ve started drawing on them. You can find the beginnings of a collection here.