I took this: https://www.furaffinity.net/view/5848119/ and made this ACEO reproduction card. I cut out the text as it never really jived with me, and that way it fit much better on the art card itself.
ACEOs and ATCs are baseball sized cards. ACTs is the name for cards like these that are traded (for no money value) between artists. ACEOs are the same thing, except they are put up for sale so that other non-artists (or non ATC making folks) can enjoy them as well.