Paper pushing device

A paper pushing device comprising:

• a shaft configured to be received in an opening of a retaining board, the shaft comprising a longitudinal axis, a distal end, and a support end opposite the distal end;
• a head comprising a planar top surface, a bottom surface that intersects with the support end of the shaft at an intersection, and a shoulder that begins at the intersection and extends outwardly away from the shaft, the shoulder providing the head with a bottom contact surface;
• an arm extending from the head and away from the longitudinal axis, the arm comprising an intermediate section connected to the head, a diverging section having a narrow end and a wide end, and a paddle connected to the wide end of the diverging section, wherein the narrow end is connected to the intermediate section, the intermediate section has a first width, the paddle has a second width that is greater than the first width, and the diverging section has a width that increases from the first width to the second width in a direction from the narrow end to the wide end;
• wherein the intermediate section extends from the head at an angle of from about 110° to about 160° relative to the longitudinal axis of the shaft, and the paddle is angled with respect to the intermediate section at an angle of from about 115° to about 165° relative to the intermediate section.