Here is a modular bottle capable of holding 2 drinks at different temperatures. Golchi is a vacuum insulated bottle that offers 4 different configurations. It has built-in storage space for powders and an adjustable drinking spout. It is leak proof and easy to clean.
You can not only use Golchi to carry tea and coffee but can also split it to share the fun with others. It lets you carry cookies, nuts, and other goodies too. More info is available here.