The 21-in-1 Twist-a-Nut is a multi-bit, dual-ratcheting screwdriver that can perform a multitude of fastening applications. The four bits most frequently used by electricians are preloaded into the driver shaft with an additional 12 specialty bits stored in the handle. Moreover, the handle has two Accu-Loop wire looping holes and a wire-nut ratcheting wrench. Cost: $20. Ideal Industries. 800-947-3614.