arrow in the quiver
One of several options or alternatives available. With all this varied job experience under my belt, I have more than one arrow in the quiver if this particular career path isn't to my liking. I've got a job interview next week, but I'm still handing out my résumé so that I'll have another arrow in the quiver.
an arrow in the quiver
one of a number of resources or strategies that can be drawn on or followed.