Abstract: A retaining system for several items includes several group retaining structures, each group retaining structure having an item holding structure for retaining a group of related items; a collective mounting structure including mounting rails having fasteners for fastening to a mounting surface and having rail engaging structures for releasibly engaging and supporting several of the group retaining structures so that items retained on the group retaining structures are collectively displayed and individually accessible; and a group retaining structure carrier having carrier engaging structures for releasibly engaging and supporting at least one group retaining structure, the group retaining structure carrier having a carrier handle permitting a user to grasp and carry the group retaining structure carrier and any attached group retaining structure.