I hate

Idea for an invention:

a teaspoon with a built in thermometer, that you leave in the brew and that beeps or flashes when the tea cools down to your (pre-programmed) optimum drinking temperature.

Just man up and use a thermometer

Excellent invention.

I also have a tea related invention, but I reckon it might already be made.

Its basically a normal teaspoon except that it doubles up at the end and lets you pick up the tea bag and squeeze out all the juice. Spoonpliers basically.

Just man up and use 2 spoons.