What an ides! metalic business cards. Forget them on your dashboard in a hot day and they'll become very hot business cards!!! Turn them over to a convict and they'll become a cold weapon. Stuck in the middle of nowhere without a knife to spread some butter on your bread and rhere you are! you have it! stuck in the middle nowhere and an airplane will appear in the horizon - signal to the pilot using sun beams. Wow, I can sit here and think about so many useful things to do with a metalic business card.