I found
this really old post from 2006 while surfing the net for topics. She thinks we should print out cards saying something along the lines of "You'd be looking at a credit card instead of this card if your store carried anything in my size." There isn't need to spend a lot of money printing them - there are plenty of tear-away business cards you can get from places like Staples you can purchase and then print them out on your home computer.