bus
bang, boom, crack, kapow, kaboom
"'Pika' is the sound Japanese say an electric spark makes. And 'chu' is the sound a mouse makes." -Satoshi Tajiri, creator of Pokémon
The Batteries!
Each moshling makes a sound. Some moshlings may sound like they are crying.
The sound a flute makes is typically spelled as "whistle" or "flutey."
The sound a penguin makes is typically spelled "hok hok" or "bray."
Varooooom
The sound a buzzer makes when the answer is wrong is typically spelled as "bzzz" or "buzz."
cougar
The sound a goat makes is typically spelled "maa" or "bleat."
Ka-ching!
vroom
Unnh!
The typical written expression for a yawn sound is "ho hum."
The sound a rooster makes is typically spelled as "cock-a-doodle-doo."
The sound your throat makes when clearing it is spelled "ahem."