Starbucks would be wise to start selling the innovative and creative From Tumbler in their stores. From Tumbler is a reusable coffee mug that lets you know how you're making the world a better place by choosing a refillable coffee cup over a disposable one.
From Tumbler was created by two designers, Jang Jin-hee and Lee Min-Jeong. The cup is equipped with LED sensors that detect every time you pour in a new cup of coffee. Each time a new cup is detected, a small leaf will appear on the cup. These leaves will appear 365 times and eventually form a green map of the Earth.
Reminding people that they are doing a good thing is perhaps the best way to help people consistently go green and stay that way. My only issue with From Tumbler is the fact that some people may have their world map filled up in less than a year's time. Starbucks drinkers really, really like their coffee.