Abstract: An adjustable support and retention device for supporting and retaining interchageable furnishing and/or equipment is disclosed. The invention includes a pedestal; a horizontally adjustable support column attached to the pedestal for providing rotatable support to a support and retention assembly; and a support and retention mechanism. The support column assembly is attached to and projects upwards from the pedestal and provides verticle and horizontal adjustment. The pedestal can be comprised of five support members extending outwardly from its center and can include rollers for providing ground mobility to the pedestal. A braking mechanism may be provided for the rollers or pedestal to prevent movement of the pedestal with respect to the ground. Interchangeable furnishing (e.g., car seats and/or high chairs) are adaptable for use with the support and retention mechanism through complimentary hardware.