It is made up of anything that someone throws away.
Trash receptacles are made out of many different materials. Typically home trash cans are made out of a durable plastic and commercial ones are made out of a steel material.
It depends what kind of trash bag you get... sometimes they have the really cheap kinds... but they have really good ones out there.. the brand "hefty"
trash/garbage
trainers are made from leather and silk
copper and silver
Wood
leather is the most durable material for a handbag.
A sumo ring is made out of a special kind of clay.
It is made of stainless steel.
http://www.caststone.org/
Composites
Curtains/Drapes, can be made from cotton, linen, or wool.