Lawnmower left out in the rain: a resistance device that builds the muscle tissue in the lower back, shoulder and pulling arm. Ideally used to condition body for impending sickle swinging work.
Torque wrench: Device used to measure the shearing point of bolts.
Adjustable wrench: device used to round off flats of fasteners.
Channel lock pliers: Tool used to pinch meaty part of palm adjacent to thumb. Works on any finger inside handles too.
Left hand threaded lug nut: Device used to time impact guns ability to shear wheel stud. Better guns use less time.