One of the Mashburn girls, an ardent recycler, discovered this cheerful, reusable coffee cup in London a few years ago. It's made of bamboo fiber, one of the most sustainable resources on the planet. The cup is dishwasher-safe and naturally sterile, so it won't taint the flavor of your coffee (or tea) (or hot chocolate! it's your life!) And since it's super lightweight, there's no excuse not to throw it in your bag and take it with you.