Below is a list of all the available elements in the Material group in Doodle God across all 4 episodes.

Episode 1:
Book
Bricks
Cement
Ceramics
Clothing
Concrete
Fabric
Field
Paper
Wood

Episode 2:
Book
Bricks
Cement
Ceramics
Clothing
Concrete
Fabric
Field
Paper
Wood

Episode 3:
Book
Bricks
Cement
Ceramics
Clothing
Concrete
Fabric
Field
Paper
Wood

Episode 4:
Book
Ceramics
Fabric
Field
Paper
Wood