Dual latching adaptor

An adaptor comprising:

• a main body;
• a first peripheral ledge formed on said main body and extending adjacent one lateral side of said main body;
• a second peripheral ledge formed on said main body, said second peripheral ledge disposed laterally inwardly of said first peripheral ledge;
• a slider slidably disposed on an opposite lateral side of said main body, said slider having a slider body slidable between an outer position relative to said main body and an inward position relative to said main body, said slider body including a first laterally inwardly extending tab and a second laterally inwardly extending tab, said second tab disposed at a location which is laterally inward of said tab;
• wherein,
• a first container having a first container first step extending downwardly from a lateral side and a first container second step extending downwardly from an opposite lateral side can be secured to said main body with said first container first step secured beneath said first peripheral ledge and said first container second step secured beneath said first tab, and a second container having a second container first step extending downwardly from a lateral side and a second container second step extending downwardly from an opposite lateral side can be secured to said main body with said second container first step secured beneath said second peripheral ledge and said second container second step secured beneath said second tab.