a frame adapted to support at least one object relative to a tabletop of a desk located above an underlying floor, the frame shaped to define at least one compartment space adapted to receive the at least one object,

a clamp including a stationary upper clamp arm that extends from the frame and a lower clamp arm slidably coupled to the frame below the stationary upper clamp arm, the upper clamp arm configured to be arranged over a topside surface of the tabletop so that the frame is located adjacent to an edge of the tabletop, and the lower clamp arm configured to slide relative to the frame along an axis between a closed position in which the lower clamp arm confronts the upper clamp arm and an open position in which the lower clamp arm is in spaced apart relation to the upper clamp arm to define a gap therebetween, and

clamp controller means for biasing the lower clamp arm toward the closed position to cause the clamp to apply a clamp force on the tabletop when the edge of the tabletop is located in the gap between the upper and lower clamp arms so that the desk accessory is fixed relative to the tabletop,

wherein the clamp controller means includes at least one spring force element arranged to extend between and interconnect the frame and the lower clamp arm and configured to provide a closing force to the lower clamp arm to urge the lower clamp arm toward the closed position to cause the clamp to apply the clamp force on the tabletop,

wherein the lower clamp arm includes a guide plate that extends axially relative to the axis along a backside surface of the frame that faces the lower clamp arm, a lower clamp head that extends from a first end of the guide plate away from the frame parallel to the upper clamp arm, and a clamp handle that extends from a second end of the guide plate away from the frame, and the second end of the guide plate spaced apart axially from the first end of the guide plate, and the clamp handle configured to be engaged by a user to apply an opening force to the lower clamp arm that is greater than the closing force applied by the spring to cause the lower clamp arm to move from the closed position to the open position,

wherein the clamp controller means further includes a pair of guide rails that each extend away from the backside surface of the frame toward the lower clamp arm and axially along the backside surface of the frame and a pair of guide channels formed in the guide plate of the lower clamp arm that extend axially along the guide plate and open toward each other, and wherein each guide rail of the pair of guide rails is located in one guide channel of the pair of guide channel to couple the lower clamp arm to the frame and to guide movement of the lower clamp arm as the lower clamp arm slides between the closed position and the open position.