Abstract: Various products that couple with modular storage units are shown. In one example, a modular storage unit includes a detachable top panel that can itself be coupled to other objects, such as a building wall or a vehicle. The top panel includes a coupling mechanism that faces away from the building wall or vehicle, thereby allowing the housing to be coupled to the top panel. In another example, a drinking container includes a coupling mechanism to couple the drinking container to a modular storage unit.