Aries: cracking knuckles

Taurus: drumming fingers on church pews

Gemini: underwater

Cancer: the crowd before a movie starts

Leo: typing on a keyboard

Virgo: announcements over a school's PA system

Libra: ambulance sirens very far away

Scorpio: refrigerator hum

Sagittarius: something on fire

Capricorn: talking through a yawn

Aquarius: slamming a car door

Pisces: the suburbs at night in August