I have a bit of a green thumb and I love to be surrounded by plants. I came across this site the other day and got very excited. They sell tea seeds to grow your own tea bush with!
They say that you need a patience and preferebly a hillside with good drainage, but that you can also grow them in zones 6 to 8. If you are not in those zones, it says you may be able to grow them either in a greenhouse or by bringing it inside when the weather grows colder. I'm in zone 5, so I would need to do that.
I'm thinking this would be a fun project to try, so I will be ordering some seeds soon and documenting how they do here.
If herbal tea is more your style, I also found this great Herbal Tea Garden Starter Kit on Amazon.com that contains everything you need to grow herbs such as chamomile, lavender, and lemongrass.