My wife knows how to use most of my/our tools and isn't afraid to try new things. What I cannot get her to do however is to stop putting short things behind taller things in the fridge. So every month or so we have to go through and throw out all the expired stuff that has ended up hidden at the back of the fridge.
And please don't tell me that a guy who can find just the right nut in a jar full of unsorted nuts, bolts, screws etc. can't find the Keen's, or anything else, in the fridge. This is just sexist B.S.