It is made of ...
fur
They are made of ...
gold
They are made of ...
paper
They are made of ...
cork
It is made of ...
stone
They are made of ...
plastic
They are made of ...
rubber
It is made of ...
denim / fabric
It is made of ...
wool / fabric
It is made of ...
bricks
They are made of ...
steel / metal
They are made of ...
ceramics
They are made of ...
copper / metal
It is made of ...
wood
They are made of ...
tin / metal
It is made of ...
leather
They are made of ...
cotton / fabric
It is made of ...
silver
They are made of ...
wax
They are made of ...
cardboard