Entertainment Entertainment
The ability to enjoyably pass time in a stressful or dangerous situation could be a life saver. (especially if you have kids).
Whether you are stuck inside during a pandemic, or riding out the apocalypse in an underground bunker, you are going to want to be able to stay as sane as possible. Every minute you are staying inside is another minute you are not in danger.
Remember, Don't place all your eggs in one basket. You might plan on playing video games the entire time, only to have the power go out on the first night, and never come back on.
Have a mix of board games, card games, music etc