Sound of a river
Sound of the spring peepers in March
Sound of a intersection midday, traffic noises
Sound of a refrigerator hum
Sound of a screw driver, including start and stop
Sewing machine noise, including start and stop
Tuning a Ukelele
Vacuum cleaner noise, including start and stop
Sound of microwave popcorn cycle, including microwave opening and closing
Sounds of typing on a keyboard