needle in a haystack

camel through the eye of a needle

Hyperbole to illustrate something that is impossible to do or to make happen.

move the needle

To change a situation to a noticeable degree; to make an appreciable difference.

needle drop

A digital copy of a vinyl record

needle mover

A factor which noticeably influences a performance.

peg the needle

To achieve the maximum level of something, to max out, to pull out all the stops.

thread the needle

To perform a tedious task with extreme precision; to manage to find harmony or strike a balance between conflicting forces, interests, etc.