My wife and I have different sleeping habits, she is late to bed and late to rise. I am the opposite and nowadays am exhausted by nine thirty. We have solved the problem by me retiring to bed and she staying up watching re-runs of Antique Road Shows. This works very well and allows me to settle and be asleep long before she enters the bedroom.
There are times when it fails and last week was one of these times. When preparing herself for bed realised she had to take tablets from a new prescription and was faced with the problem of opening a 'Pensioner Proof' plastic container. She does not have the wrist strength for the twisting technique and was hesitant on disturbing me, so she resorted to a McGyver trick and attacked the bottom of the container with a kitchen knife.
........Here is a pix of the result.....