Silpat Cookie Sheet Liner
Don't bake cookies without it! We have like 8 of these things. They are made from flexible silicone and were originally developed for French patisseries to roll out pastry dough on. They are super easy to clean and are oven safe to 480 degrees F. Basically, it makes baking and cleanup a breeze, and they last a really long time. A great gift for anyone who loves baking. Oh, and Martha Stewart highly recommends them if that gives them anymore street cred.