Here is a smart mug that can keep your drink at the right temperature for a couple of hours, so you will never have to put up with cold tea or coffee again. The S3 has an adjustable temperature of 35 to 65C. It is powered by a 2500mAh battery and lasts up to 2 hours on battery.
The S3 mug not only maintains the proper temperature for your drink but lets you display messages on it from your smartphone. This mug is IPX6 water resistant. Expected to ship in November.[where to get it]