Idiom: ‘Arrow in the quiver’
Meaning: An arrow in the quiver is a strategy or option that could be used to achieve your objective.
How many bows are in a quiver?
An archery quiver is a cylindrical container designed to hold an archer’s arrows. Both bowhunters and target archers often use this accessory, which can be stored on the archer’s body, on his bow, or on the ground. Most quivers hold between three and twenty arrows.