A dry sink cabinet generally consists of a cabinet.
Often used in kitchens, bedrooms, on porches, in-home decorating, or can be used anywhere as a decoration. This would include fruits and vegetables if the dry sink was in the kitchen or porch, and shaving supplies or other toiletries if it was in a bedroom.
It provides a little extra storage space behind the doors of the cabinet area. The cabinet was a convenient place to keep supplies out of sight. Towels, scrub brushes, and soap could all be tucked away, yet readily available.