Green Technology

Ideally you should use a reusable cup rather than a disposable cup.  I try to .... how about you?

Some coffee places even reward you for using your own cup.  Starbucks gives a 10 cent / cup discount when you bring your own cup.

But sometimes you just need to use a disposable cup ... but rather than toss it when the coffee is done --- can you find another use for it?

"58 billion paper coffee cups are thrown in the trash each year. ... teamed up with the betacup to bring you the Coffee Cup Challenge! ... Enter your awesome idea for a paper cup reuse and win a solar-powered Voltaic backpack!"

For the rules see the link at the bottom of this post ... 

Via:  Instructables  LINK