I just wanted to interject here, that I inherited a box of catnip tea bags, the kind for human consumption, and TC loves them.
After he bum-rushes the cupboard where I keep them (he has figured out how to open the cupboard now) I toss one and he pounces on it. He goes ape over it just like the other posters' cats do.
I wish I could catch an audio clip of him asking for a tea bag---he almost sounds human with some of the noises he makes.
I'm told that the tea bags are somehow a better "grade" of product, so I might keep getting those.