quick as lightning

lightning fast

Extremely fast, fast as lightning.

lightning in a bottle

That which one seeks in attempting a difficult or challenging feat.

lightning strike

A (sometimes unofficial) strike by workers with little or no warning.

make quick work of

To accomplish a specified task easily and quickly.

quick as a flash

Extremely quick.

quick buck

A large sum of money earned easily and quickly.

quick off the mark

fast to act or react

quick on one's feet

sharp-witted.