(idiom) things that appear low in value or common but are useful if used correctly, referring to cow urine and horse-puffball fungus being used as medicine

A vessel for urine or excrement; a chamber pot, urinal, or bedpan

onomatopoeia for the sound of washing or rinsing rice; variant form

a basket or sieve-like tool used for washing and rinsing rice

puffs of fungus and cow urine; things that are low in value but can be put to good use