Magic mug

Magic mugs are often manufactured and sold as memorabilia.

For example, a mug may reveal a picture of the town or monument where it was sold, for example the Haunted Mansion/Grim Grinning Ghost Disney cup.

Customers can also have their own photographs printed on the mugs.

[2] In 2017, Panasonic introduced the concept of "smart magic mugs" when it showcased an in-car display table/screen that automatically rearranges the digitally displayed information around a mug when the latter is placed on it.

[3] This article about an item of drinkware or tool used in preparation or serving of drink is a stub.

Video of hot water being poured into a "magic mug" and the subsequent colour change
A promotional magic mug filled with a hot liquid (left) and empty (right)