What type of simple machine is a toaster oven?

Ah, a toaster oven is a wonderful example of a compound machine, which is made up of multiple simple machines working together. Inside a toaster oven, you'll find elements of both a lever (the door), a wheel and axle (the knobs), and even a pulley system (to adjust the rack height). It's truly a marvel of engineering designed to make your cooking experience a little easier and more enjoyable.