1. A method comprising: presenting, by a mobile device, an interactive user interface to a cloud-based collaboration platform including a plurality of workspaces; receiving, by the mobile device, updates regarding activities performed on a plurality of work items stored in a particular workspace of the plurality of workspaces by collaborators affiliated with the particular workspace; selecting, by the mobile device, updates from the received updates that are relevant to a user of the mobile device, the relevancy based on activity of the user in the cloud-based collaboration platform; displaying, by the mobile device, in the interactive user interface, a visual feed stream of a plurality of interactive graphical elements based on the selected updates, wherein each of the plurality of graphical elements in the visual feed stream include: a description of an activity performed on a work item in the particular work space; an identification of a collaborator that performed the activity on the work item; and a thumbnail preview of the work item, wherein the thumbnail preview depicts actual content of the work item; and wherein each of the plurality of graphical elements are displayed sequentially in the visual feed stream as the selected updates are received; detecting, by the mobile device, a user interaction, via a particular interactive graphical element of the plurality of interactive graphical elements in the visual feed stream, with a thumbnail preview of a particular work item in the particular workspace; and enabling, by the mobile device, a user to perform a plurality of actions on the particular work item, via the interactive user interface, responsive to detecting the user interaction with the thumbnail preview of the particular work item.