chalk something up to experience

a little of something goes a long way

Only a small amount of something is usually required to produce a great effect.

chalk and cheese

Said of things that are very different, though possibly superficially alike.

chalk off

To record a score or event, as if on a chalkboard.

chalk up to

To attribute or account for something; to ascribe.

get something over with

To proceed to do something as soon as possible, especially so as to have something unpleasant behind oneself.

give someone something to think about

To threaten or provide a challenge to.

give something a go

To try or attempt.

give something a miss

To forgo something.