Milk

Milk

Woodchip

Woodchip

Soil

Soil

Pine tree bark

Pine tree bark

Hempcrete

Hempcrete

Japanese knotweed

Japanese knotweed

Pig waste

Pig waste

Milk

Milk

Human hair

Human hair

Metal waste

Metal waste

Tear

Tear

Mineral residue

Mineral residue

Cow Stomach

Cow Stomach