Isn't this a pretty coffee cup?
And...surprise...it's not paper! It's the "Non-paper cup" from the store World Market (called "Cost Plus" in some areas.)
The sleeve and top are both flexible silicone.
The cup itself is porcelain.
My only complaint so far? It's hard to get lipstick off the silicone lid. But I can deal with that.
Starbucks gives a 10 cent discount for bringing in your own cup. (This is 16 ounce, or grande-sized, though I'm sure you could have them partially fill it if you'd prefer a tall-sized drink.) And if the thought of a dime discount isn't enough to convince you, just think of the warm, fuzzy feeling you get from helping the environment. (Or is that warm, fuzzy feeling from my nonfat decaf latte with two pumps of peppermint? Either way, it's nice.)
And if you don't want to buy your own super-cool mug (but why wouldn't you?!) ask for a real mug next time you're at Starbucks. If you're staying there to enjoy your drink, you can forego the paper cup and use the real thing. You won't get a discount--but they'll wash the mug for you.