It's confession time: My thumb is NOT green. I can kill a silk flower. Plants in the garden shop shake and shiver when I appear. I am a complete idiot when it comes to gardening. However ..... I had forgotten about the terrarium. Something like this just might work for me!
The modern day terrarium was discovered in 1827 by Dr. Nathaniel Ward, a London doctor with a passion for botany (read about him here). His "Wardian cases" became very popular as decorative household displays.
There's also a tea connection (why are you not surprised??) for it was in 1848 that Robert Fortune used Wardian cases to transport (smuggle, actually) by sea 20,000 tea plant seedlings from China to Assam, India. This was the literal start of [British] India's tea plantations.
So really, a teapot terrarium embodies a bit of interesting symbolism and is just one more thing that is indeed - Uniquely Tea!