A drop in the ocean.
[Idiom] A DROP IN THE OCEAN. - Making Small Contributions in a Big World
A very small amount compared to what is needed.
The expression "a drop in the ocean" refers to something very small and insignificant compared to the larger context, like a single drop of water in a vast ocean. It's often used to highlight the insignificance of one's actions or contributions in the face of a much larger issue.
Example Sentences
Your small donation is just a drop in the ocean, but it helps.
Though small, your contribution helps as part of a larger effort.
This minor repair is a drop in the ocean compared to what's needed.
The minor repair is insignificant compared to the total work needed.
Considering the fundraising goal, her contribution was a drop in the ocean.
Her contribution was small relative to the overall fundraising goal.