Maybe you could suddenly wake up one day, dramatically shorter than the day before. Or you could eat/drink something mysterious (Alice in Wonderland vibes) that causes you to shrink.
Instead of just becoming small, you could turn into a small animal instead, like a mouse. The based on that you can write what it's like to escape from mouse traps and steal food from a kitchen.
You could write from a point of view of a tall person who wishes that they weren't teased for their height. They find a mysterious person who says that they will grant their wish, only, it doesn't go too well and the person ends up smaller than they wanted to be.
In recent times with the coronavirus outbreak you might not be able to go to the store to get things you need. Proper storage of food makes thing easier to find and know where they are.
I believe that all punishments need to be looked at individually to see what punishmnet may fit the crime. You can't send a low level drug offender to prison for 20 years becuase he's addicted to drug
