Yesterday I picked up a Tea Master gadget from a Teaopia store. 
It is an ingenious little thing that makes very good tea. The neat trick of the Tea Master is the fact that as liquid passes through the steeped leafs into a glass, it is filtered through the leafs and washes away all the flavor that is trapped between the leafs. In a teapot it does not happen because liquid exists through a spout that is above the steeped leafs that have sunk to the bottom of the teapot. As a result, the tea made in the Tea Master has more flavor. But one thing bothers me. Why plastic? Why should the whole thing be made from plastic? As you pour boiling water in the TeaMaster it steeps the plastic as well as the tea! Isn’t it a bad idea?
Teaopia, make a glass container with a stainless steel bottom and filter element. It will not hold heat as well as the plastic one and will be more expensive to produce, but at least it would not cheapen the great idea of this gadget.