Let's face it, not everybody in the company will walk by the team area, study the physical taskboard, ask questions, and so on. For many, this pie-in-the-sky Agile just won't exist (or won't immediately exist). Perhaps the project is just too large to scale up these face-to-face conversations and bug-in-a-jar visibility? How does a ScrumMaster help the souls who won't leave their desks, or who cannot be there in person?
As mentioned in Chapter 4, sprint reviews are wonderful opportunities for stakeholders to learn what the team have implemented, as well as to give their feedback. Work with the product owner to figure out which stakeholders should be invited, and send the invitations early so that folks can get this important meeting on their calendars.
In lieu of (or in addition to!) sprint review attendance, perhaps it's possible to set up a sandbox environment so that stakeholders can at least preview...