I just drilled a small hole in the timer knob and twist-tied it to the main body. Surprisingly that twist tie has held tight for three years now. If I ever decide to re-purpose the timer it'll still work fine.
__________________ In Primary: English Brown Sept 2011
In Secondary: Summer Smash 2011
Keg: Noble Cascadia Amber Ale
Next Up: Something...
I second duct tape. worked for mine which has a heat sensor that kept shutting off the other day.
That said, there really is a reason turkey fryers need that stuff. People DO cause grease fires every holiday around here. One year 20 grease fires in my city. Stupid and hot oil are a poor combination.