Methods and apparatus for a modular sharps container system. A system includes a first half shell sharps container, the first half shell sharps container comprising a flat back panel including a first set of attachment features, and a second half shell sharps container, the second half shell sharps container comprising a flat back panel including a second set of attachment features, the first set of attachment features of the flat back panel of the first half shell sharps container detachably joined to the second set of attachment features of the flat back panel of the second half shell sharps container.
