A retractable support, including a base, including a first section including a first surface, and a second section connected to the first section, and an arm rotatably and translationally connected to the base, the arm including a third section engaged with the second section, the third section including a second surface, a third surface, and a fourth surface, and a fourth section connected to the third section, wherein, the arm is arranged to translationally displaced relative to the base to lock and unlock the retractable support, and rotationally displace relative to the base to expand and retract the support.