A storage bin is integrated into a ladder, providing secure storage for tools or other items used when working on a ladder. The connecting hole of the driving-side rotator is engageable with the connecting portion of the rotatable shaft in a rotational direction to integrally rotate with connecting portion of the rotatable shaft. The full-kit task can be a zero-duration task that has a full-kit date and that includes a list of items which need to be completed by the full-kit date.