A multi-purpose support assembly includes a housing that has a bottom wall and a perimeter wall coupled to and extending upwardly from the bottom wall. A lid is hingedly coupled to the housing. A stop is coupled to and extends upwardly from the perimeter wall of the housing. A shaft is coupled to and extends downwardly from the bottom wall of the housing. A base is coupled to a bottom end of the shaft. The base abuts a support surface so the base may support the housing above the support surface. The base is positionable proximate a toilet so a top of the lid may be accessible to a user seated on the toilet.