Here are some of the passwords:

Gryffindor House:
Caput Draconis
Pig snout
Wattlebird
Fortuna Major
Balderdash
Fairy lights
Banana fritters
Oddsbodokins
Flibbertigibbet
Scurvy cur

Slytherin House:
Pure-blood

Dumbledore's Office:
Sherbert Lemon
Lemon drop
Cockroach Cluster

Perfect Bathroom:
Pine fresh