Every preppers home should have a stash of dish pans.
When power is out for an extended period of time the sewer systems may back up and you will not be able to use your dishwasher or wash dishes in the sink. With dish pans you can wash dishes and take the water out side and dispose of it in the garden.
You can also use the dish pans in the garden to collect & wash your fruits & vegetables.
You can also use the dish pans in a power outage as a portable sanitation station.
Dish pans have so many uses that you should consider having 4 to 10 on hand. I have 4 in my house and plan on purchasing 4 more.