a rubber stamp with your logo on it. (I did my design in Illustrator and then had it made into a stamp at www.rubberstamps.net. There are other companies that make stamps like vistaprint and make sure to check out your local companies because you may get a better deal)
an ink pad. I used black, but you can use whatever color you want
scissors, a paper punch (this will make your cards the shape and size you want), and cardstock (I used an oatmeal color but you can use any color you want or even patterned paper!)
Okay, now I'm going to show you how to make your cards.
Place your stamp on the ink pad
Then press the stamp on your paper and repeat the process until your paper is full. Make sure you leave about a 1/4 inch space between each one so it'll be easier to cut them out.
Now you're going to cut them out with your paper punch. I turned my punch upside down when I was cutting them so I could see what I was doing.
Continue using your punch to cut the rest of your cards out of the paper.
Use your scissors to cut away some of the left over paper on the outside so you can get to the ones in the middle of the page.
Once they're all cut out, you just need to poke holes in them (if you're using them for earrings) and then you're done! Enjoy you're new cards, I bet they look awesome!
You don't have to make your cards look like mine, get creative and make them your own! Of course you can use a circle if you want, but you could also use a rectangle, square, heart, etc. I've seen some really creative cards out there, here are some examples...
This one from Allora Handmade
Let me know if you have any questions, would like me to whip up a logo/stamp design for you in Illustrator, or even to show me the cards you made! I really would LOVE to see what you come up with! Have fun!