Though it's possible to work on ceramic tiles, aluminum foil or metal sheets, you may want to find a more permanent work surface if you plan on extensively using polymer clay. The Sculpey Tools™ Oven-Safe Work Mat is a common choice for this purpose, allowing you to transition from creating to baking with ease. 

Due to its smooth surface, this polymer clay mat from Sculpey® will ensure all your creations retain their original shape. Polymer clay will take on the texture of whatever surface it touches, so choosing a smooth work surface is crucial. 

The Sculpey Tools™ Oven-Safe Work Mat:

• Has a no-skid silicone surface that will stay firmly in place as you craft.
• Allows you to design and bake your clay creations in one place. 
• Is the perfect size for toaster ovens.
• Protects any work surface.
• Is reusable and oven-safe.
• Is 7.75 inches by 13 inches. 
• Can be cleaned with soap and water.