A small amount of work.
drop in the ocean
A very small or insignificant amount; something of little importance, …
hair's breadth
A very small amount or distance.
drop in the pond
A very small or insignificant amount; something of little importance.
pin money
A relatively small sum of cash kept in one's personal possession for r…
spit in the ocean
chump change
An amount of remuneration, reward, or other monetary recompense consid…