Abstract: Collapsible holder for folding chair is set in a chair arm and the 3-D chair arm plane. The holder holds a cup or a cell phone (shape dependent, round or rectangular). The holder has a moveable member and a stationary member. The moveable member has a bottom plate, two or more upstanding legs and the legs have tabs. The stationary member has an upper lip, side wall(s) and retainers for the legs. The legs slidably move in the stationary member retainers such that in a collapsed mode, the bottom plate is closest to the lip and the holder is encased in the 3-D chair arm plane and, in the expanded mode when the tab acts as a stop against the retainer and the bottom plate is farthest away from the top surface of the chair arm and the lip, thereby enabled to hold a cup or cell phone.