Earth Day as a Marketing tool

Since today is Earth day I figured it was appropriate to write about how it can be used by business to achieve marketing strategies. It is plain to see that within the past few years going "green" has been a popular marketing strategy among many firms. Today is a perfect opportunity for those firms to feed their businesses appeal to the buyer looking for a green alternative to other products. A perfect example of this would be the deal Starbucks is doing for the day. They are offering a free cup of coffee to customers who bring in their own travel mug. The goal is to stop the waste of paper cups. This goes with their marketing strategy of having sustainable, organic products that are not only good for the customer but good for the earth as well. Using a holiday, like Earth Day, can help stimulate a businesses marketing strategy to the public.

Have you seen any other businesses use a holiday to support their marketing approach?