Materials

1. Animals

1.1. silk

1.2. wool

1.3. leather

2. Plant

2.1. wood

2.2. cotton

2.3. rubber

3. man-made

3.1. nylon

3.2. glass

3.3. plastic

3.4. styrofoam

4. Found naturally in the ground

4.1. tin

4.2. gold

4.3. granite