Simile
Don ate his salad like a vacuum cleaner.
His arms were weak and felt like noodles.
The thunder was as loud as fireworks.
Personification
The snow whispered as it fell to the ground
The bulb was as bright as the sun.
He was as smart as Einstein.
Metaphor
The clouds were puffs of cotton candy floating in the sky.
David was a wall, hitting every tennis ball that came his way.
The burnt muffins were rocks.