I case you want to control how many cookie you should have on your tea break, you can get this Face Mug with Cookie Cubbie. The mug will not only limit the number of cookie intact, it also decrease the volume of the cup so you can also decrease the caffeine consumption. This Face mug can hold about 14 oz. of liquid, while the mouth of the face (which is the cookie container) could store about 2 or 3 cookies at most.
If you are interested, you can get this Face Mug Cookie Cubbie for $18 at Amazon.