ChatGPT:

1. A mug with a built-in stirrer, allowing you to mix your coffee or tea without needing an extra utensil.

2. A mug with a removable insulated sleeve, which can be easily removed and washed.

3. A mug with a lid that doubles as a saucer, so you can put your biscuit or cookie on it.

4. A mug with a built-in filter, so you can brew loose leaf tea or coffee directly in the mug.

5. A mug with a built-in thermometer, so you can keep an eye on the temperature of your drink.

6. A mug that can be hung on a bag, so you can easily carry it around with you.

7. A mug with a built-in infuser for steeping tea or coffee.

8. A mug with a detachable handle, making it easy to clean and store.

9. A mug with a built-in strainer, allowing you to enjoy tea or coffee without the leaves or grounds.

10. A mug with a built-in light, illuminating the inside of the mug, making it easy to see the color and clarity of your drink.