Igbo proverb

Igwurube chịkọta ụkwụ ha, ha agbawa ite.

Many small efforts can become powerful together.

Literal translation: If locusts put their legs together, they can break a pot.
Explanation: A single locust is small, but a group acting together can do what one cannot.
When to use it: When people doubt the power of coordinated small contributions.