Idea
lly 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