Mobile typists usually have to settle for touch keyboards or small plastic add-ons, but the folks behind TrewGrip are looking to change that. The TrewGrip has a distinct U-shaped design with soft-grips on either end and a micro-suction panel in the middle that help keep your smartphone or tablet in place. The back of the device hosts its full QWERTY keyboard, which is split among the left and right side based on which keys are typically accessed with either hand.