A Finnish coffee-maker presents an e-ink equipped mug capable of showing text and videos on its display and report the temperature of its content to the Bluetooth connected smartphone ( which is the source of the display images)
The energy to power the electronical components is gained from the heat of the mug's filling.
Release is announced for beginning of 2015.
Video
http://youtu.be/RlAQld4kx3M
Want to try getting a test device?
http://www.paulig.fi/kampanja/muki/index.php?lang=en
P. S. I have no private or professional connection with the company or the development of the mug.