Business cards = boring
Business cards that play video games = AWESOME!
A kickstarter project called Arduboy has taken an Arduino board and stripped it down to its core components, making it small enough to fit into a credit-card sized package. The entire thing is just 1.6mm thick! So while it’s probably not priced cheap enough to hand out as a business card, how cool would it be to give out your business information on a little device that plays Tetris? Arduboy eventually plans to open up the platform for further development. You can buy one now (with improved buttons and case) on their site for $49.