simple hook
to start off simple, a basic hook shaped attachment can do wonders with a little good programming behind it. The strategy will be for the robot to navigate up to the object and place the hook in such a position that when the robot moves away the field object is caught on the robot's hook and can be returned to base without falling off. In Figures 8-4 and 8-5, the robot has a simple hook attachments; once the robot moves into position, pulling the object back to base is done without great effort.