The Power Pen is the one pen to rule them all. Reach for it every time you need to jot down notes, sketch ideas, or charge your phone. Yep, you read that right: the pen doubles as a backup battery so you make one more call or send a few more messages before it completely runs out of juice. It only has a 700 mAh capacity, so it can’t charge your battery fully, but that’s better than nothing, right?
The Power Pen’s ink tip also retracts so you can use it as a stylus. It comes with micro USB and lightning connectors, and you can charge the pen up easily by plugging it into a USB port. It retails for $40.