1. A method for providing a persistently displayed user interface portion within a multi-functionality application interface, the method comprising: providing, by a computer, a multi-functionality application; displaying, by the multi-functionality application interface, a to-do user interface bar having at least one component associated with at least one application of the multi-functionality application, the to-do user interface bar being persistently visible regardless of which application of the multi-functionality application is currently running; searching for at least one data item from a plurality of memory sources, wherein the plurality of memory sources are associated with the multi-functionality application, and wherein data items comprise: electronic mail items, meeting requests, meeting request responses, tasks, and titles of reports; determining that the at least one data item is marked for treatment as a task associated with a task application of the multi-functionality application; in response to determining that the at least one data item is marked for treatment as the task, designating the at least one data item as at least one task item; aggregating the at least one data item designated as at least one task item for display in the to-do user interface; and providing, within the to-do user interface bar, a task component for displaying the at least one task item associated with the task application of the multi-functionality application and a date picker component for displaying a calendar associated with a calendar application of the multi-functionality application.