In one sentence, describe what the following article is about:

Making a clay keychain requires mold-and-bake clay (also known as polymer clay), a small cookie cutter, a large needle or toothpick, and a split ring or keychain assembly. Make sure to cover your space with newspaper or something that can keep the clay from sticking onto the table! Split rings come in a variety of shapes and sizes. You can buy larger ones that a decorative clay shape can be directly attached to or you can buy a more complex split ring and chain assembly that is made specifically to attach your own keychain art to. Pick whichever one you like. You can even reuse parts from an old keychain if you have one lying around. Remove from the oven and allow to cool completely before attempting the next step. Be careful not to be too rough when connecting the two pieces together, as it could break your beautiful new keychain.

Summary:
Gather your materials. Place the clay shape on a baking sheet and bake according to the directions on the package. Attach your slip ring or keychain assembly to the cooled shape.