The GyroDrive cordless screw­driver has no trigger. Gyro­scopic sensors detect the motion of the operator’s wrist and activate the motor accordingly. Grip the tool firmly to turn it on and then rotate your wrist in the direction you want the bit to go. The farther you rotate, the faster it spins. The 8-volt-max tool goes 0–430 rpm, making it perfect for light-duty tasks, though it can also drive the occasional 3-inch screw. It has an LED light, a charge indicator, and a pivoting handle that can be used in-line or pistol-grip. Price: $100. COO: China. 800-433-9258.