I've gotten to the point where I want to have laminated note cards/papers physically tied to items in my parents often have problems with (such as the wifi enabled printer) because it has gotten to the point where I'll re explain the same process 2-4 times in one week. As for a specific example, after showing my stepdad how to back up his iPhone, I noticed he had a piece of paper covering the front facing camera. He thought it would stop all NSA spying because they couldn't see him.