leave something to be desired

a little of something goes a long way

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

chalk something up to experience

To take a lesson from a bad outcome instead of grieving it.

eat and leave no crumbs

Synonym of eat (“to be very good at something; to rule; to rock”).

French leave

A departure taken quietly and unnoticed, without asking for permission or informing anyone.

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.