As God spoke from the burning bush, Moses gave many excuses why he couldn't deliver Israel from slavery in Egypt. He didn't feel worthy. The people wouldn't believe him. He wasn't good with words. "Send another," he said.
Exodus 4:2 And the Lord said unto him, What is that in thine hand? And he said, A rod.
That rod, that stick, identified Moses as a shepherd. He used to be a prince, and now he was a washed up nobody on the back side of the desert.
Obeying the Lord, he threw the rod to the ground, and it became a snake. He picked it up by the tail and it became a rod again.
God used that rod in Moses' hand to bring forth the plagues in Egypt and to part the Red Sea. He used it to bring water from a rock in the desert and to bring victory in a battle.
If we give God what we have, He will give us the power to do great things for His glory.