Disclosure: This post may contain affiliate links. All opinions are my own and always will be! I'll never suggest something I don't use myself. Thanks for supporting the content that keeps Canoe Place Creative going.
Friends, when I say these are easy I mean these are EASY. Here's what you'll need:
Polymer Clay - I use Sculpey Premo.
A rubber stamp
Cutters - You can use small cookie cutters or fondant cutters
Glue (I used a hot glue gun, but you can use superglue or epoxy if you like.)
First, with any polymer clay, you need to make sure your work space is sparkling clean before you begin. I wipe down my surfaces with a towel then use a makeup wipe on my hands between colors to prevent them from transferring.
You aways need to work polymer clay for a minute to "loosen it up." Just roll it around in your fingers until it feels like play dough!
I went with a coffee theme here, so I went for a little latte and cream marbling effect. To do this, you just make little "snakes" with your colors, then twist them together and fold it once or twice before rolling it in a ball. 
Roll it out! It should be about 1/4" thick. I like this rolling pin because it doesn't stick to the clay. I make my earrings about 1/4" thick. Any thinner than that they are super easy to break!
Cut it! I just went with plain old circles, but go crazy! You can get a lot of earrings out of a small amount of clay so there's really no risk!
Stamp it and bake it! Again, I went with these coffee stamps, but use whatever you like!
Bake according to the instructions on your clay package. It will be a little pliable when it first comes out of the oven. That's how it's supposed to be! Here's the important thing when you've stamped earrings. Don't touch them for at least 4 hours! Even if it's permanent ink, it will smear if after it's baked. You can coat it with a spray sealant if you like, but I left mine as is.
Once you're sure the ink is dry, glue a post on those babies and there you have it! So easy and so cute!