Maneuvering one's bike through crowded busy streets means any sort of navigation system would have to be fairly simple, since awareness of one's surroundings is always at a premium. A new device from BeeLine offers just that level of smart simplicity, featuring a mountable disc that displays a direction arrow and the distance left to go. It's small enough to clip on to your key ring when not in use, and its e-paper screen allows for a battery life that lasts for an entire month of riding. Pairing the BeeLine with your smartphone enables riders to set directions. Go to the product's Kickstarter page to learn more.