"you will use the chamberpots that you will find in the attic"

 

Chamberpot
GNU Free Documentation LicenseChamberpot - Credit: Audrius Meskauskas

Chamberpots are no longer used in North America, or hardly anywhere. They were containers used as urinals until flush toilets began to replace them. The Dollengangar children had a water closet with a flush toilet at their disposal because the use of chamberpots had faded away by the mid-19th century.

A deeper look into the chamberpot