Growing up my Dad was horrible at getting up in the morning so my Mom got him one of those old fashioned alarm clocks that could wake the dead. It got him up..of course it got the rest of the family up and the neighbors on occasion. But he was never late for work again..
When WH and I first got married he decided he didn't need to wake to an alarm clock since I could just call him and wake him up. Yea, not happening. When he wasn't paying attention to his phone I recorded me running my nails across a chalkboard and uploaded it as his alarm clock. He hates that sound SO MUCH that he quickly learned to wake to his alarm without help.
I think I learned a lesson from my mom, not a nice one though!