This caged slave is in a domestic setting and the most common in my view. These dog cages are easily bought from pet stores or online.
This slave is chained up in a more solid cage, but still in a domestic setting due to the wall picture.
This is a more robust cage for a slave. A proper cell for storage.
This storage cell is in the ground, useful but depends what the Master wants for his property.
An intriguing photo. Slaves being transported as cargo. Does this actually happen?