Organizer attachable to computer monitor frame

A configurable organizer is provided that is attachable to a computer monitor. The organizer includes a telescoping frame including a vertically extending main housing member and an auxiliary housing member connected to the main housing member. The auxiliary housing member is slideable in a vertical direction with respect to the main housing member and can be fixed at a plurality of vertical positions between a contracted position and an extended position. Desktop item-retaining implements are supported by the telescoping frame and, in particular, some are fixedly attached to the frame while others are modular, and thus removable and repositionable on the frame.