An Ephemeral List navigation panel provided in conjunction with an Object-Action navigation tool which is a temporary "parking space" for objects encountered within other portions or modules of the Object-Action navigation tool. The panel represents a history, preferably in the form of a push-down stack, of products and/or objects encountered by the user. Items and objects within the panel are selectable by the user, and may be acted upon as indicated by the user such as adding, deleting, filtering and sorting them. The panel may be populated directly or indirectly by other processes associated with the Object-Action navigation tool, and the panel may cause actions within the other processes directly or indirectly responsive to user actions on the panel.