Bakelite Napkin Rings

bakelite
A heat-resisting chemically inert resin (an early thermosetting plastic) made from phenol and formaldehyde
An early form of brittle plastic, typically dark brown, made from formaldehyde and phenol, used chiefly for electrical equipment
a thermosetting plastic used as electric insulators and for making plastic ware and telephone receivers etc.
Bakelite , or polyoxybenzylmethylenglycolanhydride, is an early plastic. It is a thermosetting phenol formaldehyde resin, formed from an elimination reaction of phenol with formaldehyde, usually with a wood flour filler. It was developed in 1907–1909 by Belgian chemist Dr. Leo Baekeland.

napkin
diaper: garment consisting of a folded cloth drawn up between the legs and fastened at the waist; worn by infants to catch excrement
A napkin, or face towel (also in Canada, the United Kingdom, Australia and South Africa: serviette) is a rectangle of cloth or tissue paper used at the table for wiping the mouth while eating. It is usually small and folded.
A square piece of cloth or paper used at a meal to wipe the fingers or lips and to protect garments, or to serve food on
a small piece of table linen that is used to wipe the mouth and to cover the lap in order to protect clothing
A baby's diaper

rings
Each of a series of resonant or vibrating sounds signaling an incoming telephone call
(ring) a characteristic sound; "it has the ring of sincerity"
An act of causing a bell to sound, or the resonant sound caused by this
(ring) sound loudly and sonorously; "the bells rang"
A telephone call
gymnastic apparatus consisting of a pair of heavy metal circles (usually covered with leather) suspended by ropes; used for gymnastic exercises; "the rings require a strong upper body"