This is what I made for my wife. It works both the power switch and the hood knob.
Broom handle cut to length, hole saw drilled through scrap 2x4 diameter of fan knob, dowel pins glued in then screw and glue wheel onto stick.
A bit of foam mouse pad glued on adds grip to rotate the fan switch. The dowel pins fit outside the fan switch but engage the cross shaped hood crank.