Abstract: A detachable tray assembly for holding personal items comprising a tray surrounded at the perimeter of its upper surface by a flange. Support arms are pivotally mounted on the tray. Adjustable clamp devices are mounted on the support arms to secure the support arms to the chair frame. Support arms may be telescopically adjustable. Clamping devices can be of a variety of types including opposing arcuate bifuricated tines and/or an adjustable collar. Clamping devices may be tightened by manually adjusting screwtype fasteners. The tray assembly is easily moved between chairs of varying sizes without the use of tools.